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Finding the Fourth Proportional to 9,387.48, 14,011.95 and 8,280.60

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Solution

The fourth proportional to 9,387.48, 14,011.95 and 8,280.60 is: 12,359.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,387.48 : 14,011.95 = 8,280.60 : x
  2. Step 2: Convert to fraction form
    9,387.48/14,011.95 = 8,280.60/x
  3. Step 3: Cross multiply
    9,387.48x = 14,011.95 × 8,280.60
  4. Step 4: Simplify right side
    9,387.48x = 116,027,353.17
  5. Step 5: Solve for x
    x = 116,027,353.17/9,387.48
  6. Step 6: Final answer
    x = 12,359.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.