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Finding the Fourth Proportional to 2,040.29, 3,060.95 and 807.71

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Solution

The fourth proportional to 2,040.29, 3,060.95 and 807.71 is: 1,211.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,040.29 : 3,060.95 = 807.71 : x
  2. Step 2: Convert to fraction form
    2,040.29/3,060.95 = 807.71/x
  3. Step 3: Cross multiply
    2,040.29x = 3,060.95 × 807.71
  4. Step 4: Simplify right side
    2,040.29x = 2,472,354.06
  5. Step 5: Solve for x
    x = 2,472,354.06/2,040.29
  6. Step 6: Final answer
    x = 1,211.77

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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.