Home / 7,933.20-11,899.80-2,387.40

Finding the Fourth Proportional to 7,933.20, 11,899.80 and 2,387.40

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Solution

The fourth proportional to 7,933.20, 11,899.80 and 2,387.40 is: 3,581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,933.20 : 11,899.80 = 2,387.40 : x
  2. Step 2: Convert to fraction form
    7,933.20/11,899.80 = 2,387.40/x
  3. Step 3: Cross multiply
    7,933.20x = 11,899.80 × 2,387.40
  4. Step 4: Simplify right side
    7,933.20x = 28,409,582.52
  5. Step 5: Solve for x
    x = 28,409,582.52/7,933.20
  6. Step 6: Final answer
    x = 3,581.10

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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.