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Finding the Fourth Proportional to 2,978.88, 4,110.65 and 1,652.70

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Solution

The fourth proportional to 2,978.88, 4,110.65 and 1,652.70 is: 2,280.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,978.88 : 4,110.65 = 1,652.70 : x
  2. Step 2: Convert to fraction form
    2,978.88/4,110.65 = 1,652.70/x
  3. Step 3: Cross multiply
    2,978.88x = 4,110.65 × 1,652.70
  4. Step 4: Simplify right side
    2,978.88x = 6,793,684.60
  5. Step 5: Solve for x
    x = 6,793,684.60/2,978.88
  6. Step 6: Final answer
    x = 2,280.62

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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.