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Finding the Fourth Proportional to 7,915.29, 10,915.88 and 6,795.87

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Solution

The fourth proportional to 7,915.29, 10,915.88 and 6,795.87 is: 9,372.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.29 : 10,915.88 = 6,795.87 : x
  2. Step 2: Convert to fraction form
    7,915.29/10,915.88 = 6,795.87/x
  3. Step 3: Cross multiply
    7,915.29x = 10,915.88 × 6,795.87
  4. Step 4: Simplify right side
    7,915.29x = 74,182,867.44
  5. Step 5: Solve for x
    x = 74,182,867.44/7,915.29
  6. Step 6: Final answer
    x = 9,372.10

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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.