Home / 3,990.04-5,983.62-1,681.72

Finding the Fourth Proportional to 3,990.04, 5,983.62 and 1,681.72

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Solution

The fourth proportional to 3,990.04, 5,983.62 and 1,681.72 is: 2,521.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.04 : 5,983.62 = 1,681.72 : x
  2. Step 2: Convert to fraction form
    3,990.04/5,983.62 = 1,681.72/x
  3. Step 3: Cross multiply
    3,990.04x = 5,983.62 × 1,681.72
  4. Step 4: Simplify right side
    3,990.04x = 10,062,773.43
  5. Step 5: Solve for x
    x = 10,062,773.43/3,990.04
  6. Step 6: Final answer
    x = 2,521.97

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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.