Home / 6,742.62-9,306.05-3,909.60

Finding the Fourth Proportional to 6,742.62, 9,306.05 and 3,909.60

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Solution

The fourth proportional to 6,742.62, 9,306.05 and 3,909.60 is: 5,395.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,742.62 : 9,306.05 = 3,909.60 : x
  2. Step 2: Convert to fraction form
    6,742.62/9,306.05 = 3,909.60/x
  3. Step 3: Cross multiply
    6,742.62x = 9,306.05 × 3,909.60
  4. Step 4: Simplify right side
    6,742.62x = 36,382,913.53
  5. Step 5: Solve for x
    x = 36,382,913.53/6,742.62
  6. Step 6: Final answer
    x = 5,395.96

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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.