Home / 2,785.13-3,843.47-1,543.13

Finding the Fourth Proportional to 2,785.13, 3,843.47 and 1,543.13

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Solution

The fourth proportional to 2,785.13, 3,843.47 and 1,543.13 is: 2,129.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.13 : 3,843.47 = 1,543.13 : x
  2. Step 2: Convert to fraction form
    2,785.13/3,843.47 = 1,543.13/x
  3. Step 3: Cross multiply
    2,785.13x = 3,843.47 × 1,543.13
  4. Step 4: Simplify right side
    2,785.13x = 5,930,958.50
  5. Step 5: Solve for x
    x = 5,930,958.50/2,785.13
  6. Step 6: Final answer
    x = 2,129.51

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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.