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Finding the Fourth Proportional to 6,662.76, 9,206.82 and 5,775.72

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Solution

The fourth proportional to 6,662.76, 9,206.82 and 5,775.72 is: 7,981.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,662.76 : 9,206.82 = 5,775.72 : x
  2. Step 2: Convert to fraction form
    6,662.76/9,206.82 = 5,775.72/x
  3. Step 3: Cross multiply
    6,662.76x = 9,206.82 × 5,775.72
  4. Step 4: Simplify right side
    6,662.76x = 53,176,014.41
  5. Step 5: Solve for x
    x = 53,176,014.41/6,662.76
  6. Step 6: Final answer
    x = 7,981.08

Related Problems

Find fourth proportional to 3,331.38, 4,603.41 and 2,887.86
Half scale
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Double scale
Find fourth proportional to 6,663.76, 9,208.20 and 5,776.72
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.