Home / 3,412.31-5,118.78-1,332.48

Finding the Fourth Proportional to 3,412.31, 5,118.78 and 1,332.48

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Solution

The fourth proportional to 3,412.31, 5,118.78 and 1,332.48 is: 1,998.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.31 : 5,118.78 = 1,332.48 : x
  2. Step 2: Convert to fraction form
    3,412.31/5,118.78 = 1,332.48/x
  3. Step 3: Cross multiply
    3,412.31x = 5,118.78 × 1,332.48
  4. Step 4: Simplify right side
    3,412.31x = 6,820,671.97
  5. Step 5: Solve for x
    x = 6,820,671.97/3,412.31
  6. Step 6: Final answer
    x = 1,998.85

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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.