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Finding the Fourth Proportional to 2,339.90, 3,510.24 and 879.02

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Solution

The fourth proportional to 2,339.90, 3,510.24 and 879.02 is: 1,318.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,339.90 : 3,510.24 = 879.02 : x
  2. Step 2: Convert to fraction form
    2,339.90/3,510.24 = 879.02/x
  3. Step 3: Cross multiply
    2,339.90x = 3,510.24 × 879.02
  4. Step 4: Simplify right side
    2,339.90x = 3,085,571.16
  5. Step 5: Solve for x
    x = 3,085,571.16/2,339.90
  6. Step 6: Final answer
    x = 1,318.68

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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.