Home / 3,150.30-4,721.40-2,785.80

Finding the Fourth Proportional to 3,150.30, 4,721.40 and 2,785.80

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Solution

The fourth proportional to 3,150.30, 4,721.40 and 2,785.80 is: 4,175.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,150.30 : 4,721.40 = 2,785.80 : x
  2. Step 2: Convert to fraction form
    3,150.30/4,721.40 = 2,785.80/x
  3. Step 3: Cross multiply
    3,150.30x = 4,721.40 × 2,785.80
  4. Step 4: Simplify right side
    3,150.30x = 13,152,876.12
  5. Step 5: Solve for x
    x = 13,152,876.12/3,150.30
  6. Step 6: Final answer
    x = 4,175.12

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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.