Home / 3,135.32-4,703.12-1,187.68

Finding the Fourth Proportional to 3,135.32, 4,703.12 and 1,187.68

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Solution

The fourth proportional to 3,135.32, 4,703.12 and 1,187.68 is: 1,781.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.32 : 4,703.12 = 1,187.68 : x
  2. Step 2: Convert to fraction form
    3,135.32/4,703.12 = 1,187.68/x
  3. Step 3: Cross multiply
    3,135.32x = 4,703.12 × 1,187.68
  4. Step 4: Simplify right side
    3,135.32x = 5,585,801.56
  5. Step 5: Solve for x
    x = 5,585,801.56/3,135.32
  6. Step 6: Final answer
    x = 1,781.57

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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.