Home / 5,387.05-7,436.15-3,149.65

Finding the Fourth Proportional to 5,387.05, 7,436.15 and 3,149.65

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Solution

The fourth proportional to 5,387.05, 7,436.15 and 3,149.65 is: 4,347.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.05 : 7,436.15 = 3,149.65 : x
  2. Step 2: Convert to fraction form
    5,387.05/7,436.15 = 3,149.65/x
  3. Step 3: Cross multiply
    5,387.05x = 7,436.15 × 3,149.65
  4. Step 4: Simplify right side
    5,387.05x = 23,421,266.35
  5. Step 5: Solve for x
    x = 23,421,266.35/5,387.05
  6. Step 6: Final answer
    x = 4,347.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.