Home / 7,915.76-11,869.15-3,230.28

Finding the Fourth Proportional to 7,915.76, 11,869.15 and 3,230.28

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Solution

The fourth proportional to 7,915.76, 11,869.15 and 3,230.28 is: 4,843.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.76 : 11,869.15 = 3,230.28 : x
  2. Step 2: Convert to fraction form
    7,915.76/11,869.15 = 3,230.28/x
  3. Step 3: Cross multiply
    7,915.76x = 11,869.15 × 3,230.28
  4. Step 4: Simplify right side
    7,915.76x = 38,340,677.86
  5. Step 5: Solve for x
    x = 38,340,677.86/7,915.76
  6. Step 6: Final answer
    x = 4,843.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.