Home / 3,987.27-5,506.52-2,990.97

Finding the Fourth Proportional to 3,987.27, 5,506.52 and 2,990.97

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Solution

The fourth proportional to 3,987.27, 5,506.52 and 2,990.97 is: 4,130.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.27 : 5,506.52 = 2,990.97 : x
  2. Step 2: Convert to fraction form
    3,987.27/5,506.52 = 2,990.97/x
  3. Step 3: Cross multiply
    3,987.27x = 5,506.52 × 2,990.97
  4. Step 4: Simplify right side
    3,987.27x = 16,469,821.17
  5. Step 5: Solve for x
    x = 16,469,821.17/3,987.27
  6. Step 6: Final answer
    x = 4,130.60

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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.