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Finding the Fourth Proportional to 2,071.32, 3,107 and 610.48

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Solution

The fourth proportional to 2,071.32, 3,107 and 610.48 is: 915.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,071.32 : 3,107 = 610.48 : x
  2. Step 2: Convert to fraction form
    2,071.32/3,107 = 610.48/x
  3. Step 3: Cross multiply
    2,071.32x = 3,107 × 610.48
  4. Step 4: Simplify right side
    2,071.32x = 1,896,761.36
  5. Step 5: Solve for x
    x = 1,896,761.36/2,071.32
  6. Step 6: Final answer
    x = 915.73

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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.