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Finding the Fourth Proportional to 7,915.58, 10,922.82 and 4,377.91

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Solution

The fourth proportional to 7,915.58, 10,922.82 and 4,377.91 is: 6,041.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.58 : 10,922.82 = 4,377.91 : x
  2. Step 2: Convert to fraction form
    7,915.58/10,922.82 = 4,377.91/x
  3. Step 3: Cross multiply
    7,915.58x = 10,922.82 × 4,377.91
  4. Step 4: Simplify right side
    7,915.58x = 47,819,122.91
  5. Step 5: Solve for x
    x = 47,819,122.91/7,915.58
  6. Step 6: Final answer
    x = 6,041.14

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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.