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Finding the Fourth Proportional to 2,510.52, 3,766 and 866.40

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Solution

The fourth proportional to 2,510.52, 3,766 and 866.40 is: 1,299.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,510.52 : 3,766 = 866.40 : x
  2. Step 2: Convert to fraction form
    2,510.52/3,766 = 866.40/x
  3. Step 3: Cross multiply
    2,510.52x = 3,766 × 866.40
  4. Step 4: Simplify right side
    2,510.52x = 3,262,862.40
  5. Step 5: Solve for x
    x = 3,262,862.40/2,510.52
  6. Step 6: Final answer
    x = 1,299.68

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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.