Home / 9,142.93-13,711.56-3,298.78

Finding the Fourth Proportional to 9,142.93, 13,711.56 and 3,298.78

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Solution

The fourth proportional to 9,142.93, 13,711.56 and 3,298.78 is: 4,947.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,142.93 : 13,711.56 = 3,298.78 : x
  2. Step 2: Convert to fraction form
    9,142.93/13,711.56 = 3,298.78/x
  3. Step 3: Cross multiply
    9,142.93x = 13,711.56 × 3,298.78
  4. Step 4: Simplify right side
    9,142.93x = 45,231,419.90
  5. Step 5: Solve for x
    x = 45,231,419.90/9,142.93
  6. Step 6: Final answer
    x = 4,947.15

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1.5x scale

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.