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Finding the Fourth Proportional to 2,978.90, 4,110.82 and 1,652.58

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Solution

The fourth proportional to 2,978.90, 4,110.82 and 1,652.58 is: 2,280.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,978.90 : 4,110.82 = 1,652.58 : x
  2. Step 2: Convert to fraction form
    2,978.90/4,110.82 = 1,652.58/x
  3. Step 3: Cross multiply
    2,978.90x = 4,110.82 × 1,652.58
  4. Step 4: Simplify right side
    2,978.90x = 6,793,454.78
  5. Step 5: Solve for x
    x = 6,793,454.78/2,978.90
  6. Step 6: Final answer
    x = 2,280.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.