Home / 2,931.13-4,394.18-1,081.90

Finding the Fourth Proportional to 2,931.13, 4,394.18 and 1,081.90

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Solution

The fourth proportional to 2,931.13, 4,394.18 and 1,081.90 is: 1,621.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.13 : 4,394.18 = 1,081.90 : x
  2. Step 2: Convert to fraction form
    2,931.13/4,394.18 = 1,081.90/x
  3. Step 3: Cross multiply
    2,931.13x = 4,394.18 × 1,081.90
  4. Step 4: Simplify right side
    2,931.13x = 4,754,063.34
  5. Step 5: Solve for x
    x = 4,754,063.34/2,931.13
  6. Step 6: Final answer
    x = 1,621.92

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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.