Home / 8,915.78-13,373.37-4,239.15

Finding the Fourth Proportional to 8,915.78, 13,373.37 and 4,239.15

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Solution

The fourth proportional to 8,915.78, 13,373.37 and 4,239.15 is: 6,358.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.78 : 13,373.37 = 4,239.15 : x
  2. Step 2: Convert to fraction form
    8,915.78/13,373.37 = 4,239.15/x
  3. Step 3: Cross multiply
    8,915.78x = 13,373.37 × 4,239.15
  4. Step 4: Simplify right side
    8,915.78x = 56,691,721.44
  5. Step 5: Solve for x
    x = 56,691,721.44/8,915.78
  6. Step 6: Final answer
    x = 6,358.59

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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.