Home / 3,988.12-5,983.16-3,921.96

Finding the Fourth Proportional to 3,988.12, 5,983.16 and 3,921.96

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Solution

The fourth proportional to 3,988.12, 5,983.16 and 3,921.96 is: 5,883.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.12 : 5,983.16 = 3,921.96 : x
  2. Step 2: Convert to fraction form
    3,988.12/5,983.16 = 3,921.96/x
  3. Step 3: Cross multiply
    3,988.12x = 5,983.16 × 3,921.96
  4. Step 4: Simplify right side
    3,988.12x = 23,465,714.19
  5. Step 5: Solve for x
    x = 23,465,714.19/3,988.12
  6. Step 6: Final answer
    x = 5,883.90

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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.