Home / 3,986,937.60-5,981,281.20-1,291,387.20

Finding the Fourth Proportional to 3,986,937.60, 5,981,281.20 and 1,291,387.20

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Solution

The fourth proportional to 3,986,937.60, 5,981,281.20 and 1,291,387.20 is: 1,937,364.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986,937.60 : 5,981,281.20 = 1,291,387.20 : x
  2. Step 2: Convert to fraction form
    3,986,937.60/5,981,281.20 = 1,291,387.20/x
  3. Step 3: Cross multiply
    3,986,937.60x = 5,981,281.20 × 1,291,387.20
  4. Step 4: Simplify right side
    3,986,937.60x = 7,724,149,981,280.64
  5. Step 5: Solve for x
    x = 7,724,149,981,280.64/3,986,937.60
  6. Step 6: Final answer
    x = 1,937,364.15

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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.