Home / 2,129.06-3,191.32-1,031.02

Finding the Fourth Proportional to 2,129.06, 3,191.32 and 1,031.02

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Solution

The fourth proportional to 2,129.06, 3,191.32 and 1,031.02 is: 1,545.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.06 : 3,191.32 = 1,031.02 : x
  2. Step 2: Convert to fraction form
    2,129.06/3,191.32 = 1,031.02/x
  3. Step 3: Cross multiply
    2,129.06x = 3,191.32 × 1,031.02
  4. Step 4: Simplify right side
    2,129.06x = 3,290,308.06
  5. Step 5: Solve for x
    x = 3,290,308.06/2,129.06
  6. Step 6: Final answer
    x = 1,545.43

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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.