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Finding the Fourth Proportional to 7,915.51, 10,922.97 and 4,329.76

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Solution

The fourth proportional to 7,915.51, 10,922.97 and 4,329.76 is: 5,974.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.51 : 10,922.97 = 4,329.76 : x
  2. Step 2: Convert to fraction form
    7,915.51/10,922.97 = 4,329.76/x
  3. Step 3: Cross multiply
    7,915.51x = 10,922.97 × 4,329.76
  4. Step 4: Simplify right side
    7,915.51x = 47,293,838.59
  5. Step 5: Solve for x
    x = 47,293,838.59/7,915.51
  6. Step 6: Final answer
    x = 5,974.83

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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.