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Finding the Fourth Proportional to 6,610.76, 9,117.60 and 5,619.32

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Solution

The fourth proportional to 6,610.76, 9,117.60 and 5,619.32 is: 7,750.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,610.76 : 9,117.60 = 5,619.32 : x
  2. Step 2: Convert to fraction form
    6,610.76/9,117.60 = 5,619.32/x
  3. Step 3: Cross multiply
    6,610.76x = 9,117.60 × 5,619.32
  4. Step 4: Simplify right side
    6,610.76x = 51,234,712.03
  5. Step 5: Solve for x
    x = 51,234,712.03/6,610.76
  6. Step 6: Final answer
    x = 7,750.20

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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.