Home / 9,126.39-13,681.38-3,278.91

Finding the Fourth Proportional to 9,126.39, 13,681.38 and 3,278.91

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Solution

The fourth proportional to 9,126.39, 13,681.38 and 3,278.91 is: 4,915.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,126.39 : 13,681.38 = 3,278.91 : x
  2. Step 2: Convert to fraction form
    9,126.39/13,681.38 = 3,278.91/x
  3. Step 3: Cross multiply
    9,126.39x = 13,681.38 × 3,278.91
  4. Step 4: Simplify right side
    9,126.39x = 44,860,013.70
  5. Step 5: Solve for x
    x = 44,860,013.70/9,126.39
  6. Step 6: Final answer
    x = 4,915.42

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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.