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Finding the Fourth Proportional to 8,935.20, 13,359.60 and 6,602.40

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Solution

The fourth proportional to 8,935.20, 13,359.60 and 6,602.40 is: 9,871.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,935.20 : 13,359.60 = 6,602.40 : x
  2. Step 2: Convert to fraction form
    8,935.20/13,359.60 = 6,602.40/x
  3. Step 3: Cross multiply
    8,935.20x = 13,359.60 × 6,602.40
  4. Step 4: Simplify right side
    8,935.20x = 88,205,423.04
  5. Step 5: Solve for x
    x = 88,205,423.04/8,935.20
  6. Step 6: Final answer
    x = 9,871.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.