Home / 7,899.80-11,849.70-5,288.60

Finding the Fourth Proportional to 7,899.80, 11,849.70 and 5,288.60

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Solution

The fourth proportional to 7,899.80, 11,849.70 and 5,288.60 is: 7,932.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,899.80 : 11,849.70 = 5,288.60 : x
  2. Step 2: Convert to fraction form
    7,899.80/11,849.70 = 5,288.60/x
  3. Step 3: Cross multiply
    7,899.80x = 11,849.70 × 5,288.60
  4. Step 4: Simplify right side
    7,899.80x = 62,668,323.42
  5. Step 5: Solve for x
    x = 62,668,323.42/7,899.80
  6. Step 6: Final answer
    x = 7,932.90

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Similar ratio
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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.