Home / 7,141.24-10,711.86-1,947.88

Finding the Fourth Proportional to 7,141.24, 10,711.86 and 1,947.88

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Solution

The fourth proportional to 7,141.24, 10,711.86 and 1,947.88 is: 2,921.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,141.24 : 10,711.86 = 1,947.88 : x
  2. Step 2: Convert to fraction form
    7,141.24/10,711.86 = 1,947.88/x
  3. Step 3: Cross multiply
    7,141.24x = 10,711.86 × 1,947.88
  4. Step 4: Simplify right side
    7,141.24x = 20,865,417.86
  5. Step 5: Solve for x
    x = 20,865,417.86/7,141.24
  6. Step 6: Final answer
    x = 2,921.82

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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.