Home / 7,151.20-9,868.70-3,964.59

Finding the Fourth Proportional to 7,151.20, 9,868.70 and 3,964.59

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Solution

The fourth proportional to 7,151.20, 9,868.70 and 3,964.59 is: 5,471.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,151.20 : 9,868.70 = 3,964.59 : x
  2. Step 2: Convert to fraction form
    7,151.20/9,868.70 = 3,964.59/x
  3. Step 3: Cross multiply
    7,151.20x = 9,868.70 × 3,964.59
  4. Step 4: Simplify right side
    7,151.20x = 39,125,359.24
  5. Step 5: Solve for x
    x = 39,125,359.24/7,151.20
  6. Step 6: Final answer
    x = 5,471.16

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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.