Home / 3,987,871.20-5,981,806.80-3,679,941.60

Finding the Fourth Proportional to 3,987,871.20, 5,981,806.80 and 3,679,941.60

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Solution

The fourth proportional to 3,987,871.20, 5,981,806.80 and 3,679,941.60 is: 5,519,912.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987,871.20 : 5,981,806.80 = 3,679,941.60 : x
  2. Step 2: Convert to fraction form
    3,987,871.20/5,981,806.80 = 3,679,941.60/x
  3. Step 3: Cross multiply
    3,987,871.20x = 5,981,806.80 × 3,679,941.60
  4. Step 4: Simplify right side
    3,987,871.20x = 22,012,699,686,482.88
  5. Step 5: Solve for x
    x = 22,012,699,686,482.88/3,987,871.20
  6. Step 6: Final answer
    x = 5,519,912.40

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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.