Home / 2,127.13-3,191.60-1,031.60

Finding the Fourth Proportional to 2,127.13, 3,191.60 and 1,031.60

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Solution

The fourth proportional to 2,127.13, 3,191.60 and 1,031.60 is: 1,547.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.13 : 3,191.60 = 1,031.60 : x
  2. Step 2: Convert to fraction form
    2,127.13/3,191.60 = 1,031.60/x
  3. Step 3: Cross multiply
    2,127.13x = 3,191.60 × 1,031.60
  4. Step 4: Simplify right side
    2,127.13x = 3,292,465.12
  5. Step 5: Solve for x
    x = 3,292,465.12/2,127.13
  6. Step 6: Final answer
    x = 1,547.85

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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.