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Finding the Fourth Proportional to 2,040.40, 3,061.06 and 653.82

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Solution

The fourth proportional to 2,040.40, 3,061.06 and 653.82 is: 980.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,040.40 : 3,061.06 = 653.82 : x
  2. Step 2: Convert to fraction form
    2,040.40/3,061.06 = 653.82/x
  3. Step 3: Cross multiply
    2,040.40x = 3,061.06 × 653.82
  4. Step 4: Simplify right side
    2,040.40x = 2,001,382.25
  5. Step 5: Solve for x
    x = 2,001,382.25/2,040.40
  6. Step 6: Final answer
    x = 980.88

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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.