Home / 1,986.08-2,737.60-1,565.72

Finding the Fourth Proportional to 1,986.08, 2,737.60 and 1,565.72

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Solution

The fourth proportional to 1,986.08, 2,737.60 and 1,565.72 is: 2,158.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.08 : 2,737.60 = 1,565.72 : x
  2. Step 2: Convert to fraction form
    1,986.08/2,737.60 = 1,565.72/x
  3. Step 3: Cross multiply
    1,986.08x = 2,737.60 × 1,565.72
  4. Step 4: Simplify right side
    1,986.08x = 4,286,315.07
  5. Step 5: Solve for x
    x = 4,286,315.07/1,986.08
  6. Step 6: Final answer
    x = 2,158.18

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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.