Home / 7,595.20-11,387.40-3,431.80

Finding the Fourth Proportional to 7,595.20, 11,387.40 and 3,431.80

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Solution

The fourth proportional to 7,595.20, 11,387.40 and 3,431.80 is: 5,145.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,595.20 : 11,387.40 = 3,431.80 : x
  2. Step 2: Convert to fraction form
    7,595.20/11,387.40 = 3,431.80/x
  3. Step 3: Cross multiply
    7,595.20x = 11,387.40 × 3,431.80
  4. Step 4: Simplify right side
    7,595.20x = 39,079,279.32
  5. Step 5: Solve for x
    x = 39,079,279.32/7,595.20
  6. Step 6: Final answer
    x = 5,145.26

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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.