Home / 7,522.38-11,281.72-3,139.86

Finding the Fourth Proportional to 7,522.38, 11,281.72 and 3,139.86

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Solution

The fourth proportional to 7,522.38, 11,281.72 and 3,139.86 is: 4,709.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,522.38 : 11,281.72 = 3,139.86 : x
  2. Step 2: Convert to fraction form
    7,522.38/11,281.72 = 3,139.86/x
  3. Step 3: Cross multiply
    7,522.38x = 11,281.72 × 3,139.86
  4. Step 4: Simplify right side
    7,522.38x = 35,423,021.36
  5. Step 5: Solve for x
    x = 35,423,021.36/7,522.38
  6. Step 6: Final answer
    x = 4,709.02

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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.