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Finding the Fourth Proportional to 8,669.28, 11,957.04 and 6,155.04

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Solution

The fourth proportional to 8,669.28, 11,957.04 and 6,155.04 is: 8,489.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669.28 : 11,957.04 = 6,155.04 : x
  2. Step 2: Convert to fraction form
    8,669.28/11,957.04 = 6,155.04/x
  3. Step 3: Cross multiply
    8,669.28x = 11,957.04 × 6,155.04
  4. Step 4: Simplify right side
    8,669.28x = 73,596,059.48
  5. Step 5: Solve for x
    x = 73,596,059.48/8,669.28
  6. Step 6: Final answer
    x = 8,489.29

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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.