Home / 3,182.40-4,391.55-1,785.15

Finding the Fourth Proportional to 3,182.40, 4,391.55 and 1,785.15

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Solution

The fourth proportional to 3,182.40, 4,391.55 and 1,785.15 is: 2,463.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,182.40 : 4,391.55 = 1,785.15 : x
  2. Step 2: Convert to fraction form
    3,182.40/4,391.55 = 1,785.15/x
  3. Step 3: Cross multiply
    3,182.40x = 4,391.55 × 1,785.15
  4. Step 4: Simplify right side
    3,182.40x = 7,839,575.48
  5. Step 5: Solve for x
    x = 7,839,575.48/3,182.40
  6. Step 6: Final answer
    x = 2,463.42

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1.5x scale

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.