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Finding the Fourth Proportional to 9,371.68, 12,915.10 and 6,714.48

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Solution

The fourth proportional to 9,371.68, 12,915.10 and 6,714.48 is: 9,253.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,371.68 : 12,915.10 = 6,714.48 : x
  2. Step 2: Convert to fraction form
    9,371.68/12,915.10 = 6,714.48/x
  3. Step 3: Cross multiply
    9,371.68x = 12,915.10 × 6,714.48
  4. Step 4: Simplify right side
    9,371.68x = 86,718,180.65
  5. Step 5: Solve for x
    x = 86,718,180.65/9,371.68
  6. Step 6: Final answer
    x = 9,253.22

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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.