Home / 2,572.92-3,542.40-1,785.60

Finding the Fourth Proportional to 2,572.92, 3,542.40 and 1,785.60

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Solution

The fourth proportional to 2,572.92, 3,542.40 and 1,785.60 is: 2,458.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.92 : 3,542.40 = 1,785.60 : x
  2. Step 2: Convert to fraction form
    2,572.92/3,542.40 = 1,785.60/x
  3. Step 3: Cross multiply
    2,572.92x = 3,542.40 × 1,785.60
  4. Step 4: Simplify right side
    2,572.92x = 6,325,309.44
  5. Step 5: Solve for x
    x = 6,325,309.44/2,572.92
  6. Step 6: Final answer
    x = 2,458.42

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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.