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Finding the Fourth Proportional to 2,876.76, 4,317.16 and 1,645.16

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Solution

The fourth proportional to 2,876.76, 4,317.16 and 1,645.16 is: 2,468.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.76 : 4,317.16 = 1,645.16 : x
  2. Step 2: Convert to fraction form
    2,876.76/4,317.16 = 1,645.16/x
  3. Step 3: Cross multiply
    2,876.76x = 4,317.16 × 1,645.16
  4. Step 4: Simplify right side
    2,876.76x = 7,102,418.95
  5. Step 5: Solve for x
    x = 7,102,418.95/2,876.76
  6. Step 6: Final answer
    x = 2,468.90

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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.