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Finding the Fourth Proportional to 2,862.90, 4,294.35 and 1,323.90

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Solution

The fourth proportional to 2,862.90, 4,294.35 and 1,323.90 is: 1,985.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,862.90 : 4,294.35 = 1,323.90 : x
  2. Step 2: Convert to fraction form
    2,862.90/4,294.35 = 1,323.90/x
  3. Step 3: Cross multiply
    2,862.90x = 4,294.35 × 1,323.90
  4. Step 4: Simplify right side
    2,862.90x = 5,685,289.97
  5. Step 5: Solve for x
    x = 5,685,289.97/2,862.90
  6. Step 6: Final answer
    x = 1,985.85

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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.