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Finding the Fourth Proportional to 7,915.59, 10,923.66 and 4,379.13

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Solution

The fourth proportional to 7,915.59, 10,923.66 and 4,379.13 is: 6,043.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.59 : 10,923.66 = 4,379.13 : x
  2. Step 2: Convert to fraction form
    7,915.59/10,923.66 = 4,379.13/x
  3. Step 3: Cross multiply
    7,915.59x = 10,923.66 × 4,379.13
  4. Step 4: Simplify right side
    7,915.59x = 47,836,127.22
  5. Step 5: Solve for x
    x = 47,836,127.22/7,915.59
  6. Step 6: Final answer
    x = 6,043.28

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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.