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Finding the Fourth Proportional to 2,707.82, 3,737.20 and 1,965.15

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Solution

The fourth proportional to 2,707.82, 3,737.20 and 1,965.15 is: 2,712.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,707.82 : 3,737.20 = 1,965.15 : x
  2. Step 2: Convert to fraction form
    2,707.82/3,737.20 = 1,965.15/x
  3. Step 3: Cross multiply
    2,707.82x = 3,737.20 × 1,965.15
  4. Step 4: Simplify right side
    2,707.82x = 7,344,158.58
  5. Step 5: Solve for x
    x = 7,344,158.58/2,707.82
  6. Step 6: Final answer
    x = 2,712.20

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1.5x scale

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.