Home / 1,986.09-2,737.61-1,565.74

Finding the Fourth Proportional to 1,986.09, 2,737.61 and 1,565.74

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Solution

The fourth proportional to 1,986.09, 2,737.61 and 1,565.74 is: 2,158.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.09 : 2,737.61 = 1,565.74 : x
  2. Step 2: Convert to fraction form
    1,986.09/2,737.61 = 1,565.74/x
  3. Step 3: Cross multiply
    1,986.09x = 2,737.61 × 1,565.74
  4. Step 4: Simplify right side
    1,986.09x = 4,286,385.48
  5. Step 5: Solve for x
    x = 4,286,385.48/1,986.09
  6. Step 6: Final answer
    x = 2,158.20

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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.