Home / 2,785.22-3,843.61-1,543.22

Finding the Fourth Proportional to 2,785.22, 3,843.61 and 1,543.22

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Solution

The fourth proportional to 2,785.22, 3,843.61 and 1,543.22 is: 2,129.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.22 : 3,843.61 = 1,543.22 : x
  2. Step 2: Convert to fraction form
    2,785.22/3,843.61 = 1,543.22/x
  3. Step 3: Cross multiply
    2,785.22x = 3,843.61 × 1,543.22
  4. Step 4: Simplify right side
    2,785.22x = 5,931,527.16
  5. Step 5: Solve for x
    x = 5,931,527.16/2,785.22
  6. Step 6: Final answer
    x = 2,129.64

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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.