Home / 9,142.60-13,711.72-3,945.64

Finding the Fourth Proportional to 9,142.60, 13,711.72 and 3,945.64

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Solution

The fourth proportional to 9,142.60, 13,711.72 and 3,945.64 is: 5,917.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,142.60 : 13,711.72 = 3,945.64 : x
  2. Step 2: Convert to fraction form
    9,142.60/13,711.72 = 3,945.64/x
  3. Step 3: Cross multiply
    9,142.60x = 13,711.72 × 3,945.64
  4. Step 4: Simplify right side
    9,142.60x = 54,101,510.90
  5. Step 5: Solve for x
    x = 54,101,510.90/9,142.60
  6. Step 6: Final answer
    x = 5,917.52

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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.