Home / 3,182.40-4,391.70-1,785.12

Finding the Fourth Proportional to 3,182.40, 4,391.70 and 1,785.12

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Solution

The fourth proportional to 3,182.40, 4,391.70 and 1,785.12 is: 2,463.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,182.40 : 4,391.70 = 1,785.12 : x
  2. Step 2: Convert to fraction form
    3,182.40/4,391.70 = 1,785.12/x
  3. Step 3: Cross multiply
    3,182.40x = 4,391.70 × 1,785.12
  4. Step 4: Simplify right side
    3,182.40x = 7,839,711.50
  5. Step 5: Solve for x
    x = 7,839,711.50/3,182.40
  6. Step 6: Final answer
    x = 2,463.46

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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.