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Finding the Fourth Proportional to 9,372.69, 12,916.47 and 6,715.47

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Solution

The fourth proportional to 9,372.69, 12,916.47 and 6,715.47 is: 9,254.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,372.69 : 12,916.47 = 6,715.47 : x
  2. Step 2: Convert to fraction form
    9,372.69/12,916.47 = 6,715.47/x
  3. Step 3: Cross multiply
    9,372.69x = 12,916.47 × 6,715.47
  4. Step 4: Simplify right side
    9,372.69x = 86,740,166.79
  5. Step 5: Solve for x
    x = 86,740,166.79/9,372.69
  6. Step 6: Final answer
    x = 9,254.56

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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.