Home / 7,915.68-11,877.12-3,239.10

Finding the Fourth Proportional to 7,915.68, 11,877.12 and 3,239.10

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Solution

The fourth proportional to 7,915.68, 11,877.12 and 3,239.10 is: 4,860.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.68 : 11,877.12 = 3,239.10 : x
  2. Step 2: Convert to fraction form
    7,915.68/11,877.12 = 3,239.10/x
  3. Step 3: Cross multiply
    7,915.68x = 11,877.12 × 3,239.10
  4. Step 4: Simplify right side
    7,915.68x = 38,471,179.39
  5. Step 5: Solve for x
    x = 38,471,179.39/7,915.68
  6. Step 6: Final answer
    x = 4,860.12

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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.