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Finding the Fourth Proportional to 9,398.73, 12,940.65 and 7,153.41

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Solution

The fourth proportional to 9,398.73, 12,940.65 and 7,153.41 is: 9,849.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,398.73 : 12,940.65 = 7,153.41 : x
  2. Step 2: Convert to fraction form
    9,398.73/12,940.65 = 7,153.41/x
  3. Step 3: Cross multiply
    9,398.73x = 12,940.65 × 7,153.41
  4. Step 4: Simplify right side
    9,398.73x = 92,569,775.12
  5. Step 5: Solve for x
    x = 92,569,775.12/9,398.73
  6. Step 6: Final answer
    x = 9,849.18

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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.