Home / 2,142.02-3,211.17-844.40

Finding the Fourth Proportional to 2,142.02, 3,211.17 and 844.40

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Solution

The fourth proportional to 2,142.02, 3,211.17 and 844.40 is: 1,265.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.02 : 3,211.17 = 844.40 : x
  2. Step 2: Convert to fraction form
    2,142.02/3,211.17 = 844.40/x
  3. Step 3: Cross multiply
    2,142.02x = 3,211.17 × 844.40
  4. Step 4: Simplify right side
    2,142.02x = 2,711,511.95
  5. Step 5: Solve for x
    x = 2,711,511.95/2,142.02
  6. Step 6: Final answer
    x = 1,265.87

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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.