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Finding the Fourth Proportional to 6,422.77, 8,866.39 and 4,068.10

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Solution

The fourth proportional to 6,422.77, 8,866.39 and 4,068.10 is: 5,615.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,422.77 : 8,866.39 = 4,068.10 : x
  2. Step 2: Convert to fraction form
    6,422.77/8,866.39 = 4,068.10/x
  3. Step 3: Cross multiply
    6,422.77x = 8,866.39 × 4,068.10
  4. Step 4: Simplify right side
    6,422.77x = 36,069,328.82
  5. Step 5: Solve for x
    x = 36,069,328.82/6,422.77
  6. Step 6: Final answer
    x = 5,615.85

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Double scale
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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.