Home / 3,135.38-4,703.21-1,187.73

Finding the Fourth Proportional to 3,135.38, 4,703.21 and 1,187.73

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Solution

The fourth proportional to 3,135.38, 4,703.21 and 1,187.73 is: 1,781.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.38 : 4,703.21 = 1,187.73 : x
  2. Step 2: Convert to fraction form
    3,135.38/4,703.21 = 1,187.73/x
  3. Step 3: Cross multiply
    3,135.38x = 4,703.21 × 1,187.73
  4. Step 4: Simplify right side
    3,135.38x = 5,586,148.81
  5. Step 5: Solve for x
    x = 5,586,148.81/3,135.38
  6. Step 6: Final answer
    x = 1,781.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.