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Finding the Fourth Proportional to 7,910.76, 10,915.92 and 4,373.76

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Solution

The fourth proportional to 7,910.76, 10,915.92 and 4,373.76 is: 6,035.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.76 : 10,915.92 = 4,373.76 : x
  2. Step 2: Convert to fraction form
    7,910.76/10,915.92 = 4,373.76/x
  3. Step 3: Cross multiply
    7,910.76x = 10,915.92 × 4,373.76
  4. Step 4: Simplify right side
    7,910.76x = 47,743,614.26
  5. Step 5: Solve for x
    x = 47,743,614.26/7,910.76
  6. Step 6: Final answer
    x = 6,035.28

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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.