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Finding the Fourth Proportional to 9,387.24, 12,959.46 and 7,521

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Solution

The fourth proportional to 9,387.24, 12,959.46 and 7,521 is: 10,383.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,387.24 : 12,959.46 = 7,521 : x
  2. Step 2: Convert to fraction form
    9,387.24/12,959.46 = 7,521/x
  3. Step 3: Cross multiply
    9,387.24x = 12,959.46 × 7,521
  4. Step 4: Simplify right side
    9,387.24x = 97,468,098.66
  5. Step 5: Solve for x
    x = 97,468,098.66/9,387.24
  6. Step 6: Final answer
    x = 10,383.04

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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.