Home / 6,864.59-9,473.20-3,720.78

Finding the Fourth Proportional to 6,864.59, 9,473.20 and 3,720.78

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Solution

The fourth proportional to 6,864.59, 9,473.20 and 3,720.78 is: 5,134.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,864.59 : 9,473.20 = 3,720.78 : x
  2. Step 2: Convert to fraction form
    6,864.59/9,473.20 = 3,720.78/x
  3. Step 3: Cross multiply
    6,864.59x = 9,473.20 × 3,720.78
  4. Step 4: Simplify right side
    6,864.59x = 35,247,693.10
  5. Step 5: Solve for x
    x = 35,247,693.10/6,864.59
  6. Step 6: Final answer
    x = 5,134.71

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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.