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Finding the Fourth Proportional to 1,737.11, 2,390.65 and 1,381.86

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Solution

The fourth proportional to 1,737.11, 2,390.65 and 1,381.86 is: 1,901.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,737.11 : 2,390.65 = 1,381.86 : x
  2. Step 2: Convert to fraction form
    1,737.11/2,390.65 = 1,381.86/x
  3. Step 3: Cross multiply
    1,737.11x = 2,390.65 × 1,381.86
  4. Step 4: Simplify right side
    1,737.11x = 3,303,540.15
  5. Step 5: Solve for x
    x = 3,303,540.15/1,737.11
  6. Step 6: Final answer
    x = 1,901.74

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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.