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Finding the Fourth Proportional to 2,620.77, 3,618.16 and 1,737.77

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Solution

The fourth proportional to 2,620.77, 3,618.16 and 1,737.77 is: 2,399.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.77 : 3,618.16 = 1,737.77 : x
  2. Step 2: Convert to fraction form
    2,620.77/3,618.16 = 1,737.77/x
  3. Step 3: Cross multiply
    2,620.77x = 3,618.16 × 1,737.77
  4. Step 4: Simplify right side
    2,620.77x = 6,287,503.12
  5. Step 5: Solve for x
    x = 6,287,503.12/2,620.77
  6. Step 6: Final answer
    x = 2,399.11

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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.