Home / 3,011.13-4,517.12-931.31

Finding the Fourth Proportional to 3,011.13, 4,517.12 and 931.31

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Solution

The fourth proportional to 3,011.13, 4,517.12 and 931.31 is: 1,397.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.13 : 4,517.12 = 931.31 : x
  2. Step 2: Convert to fraction form
    3,011.13/4,517.12 = 931.31/x
  3. Step 3: Cross multiply
    3,011.13x = 4,517.12 × 931.31
  4. Step 4: Simplify right side
    3,011.13x = 4,206,839.03
  5. Step 5: Solve for x
    x = 4,206,839.03/3,011.13
  6. Step 6: Final answer
    x = 1,397.10

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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.