Home / 2,345.64-3,251.82-2,220.80

Finding the Fourth Proportional to 2,345.64, 3,251.82 and 2,220.80

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Solution

The fourth proportional to 2,345.64, 3,251.82 and 2,220.80 is: 3,078.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,345.64 : 3,251.82 = 2,220.80 : x
  2. Step 2: Convert to fraction form
    2,345.64/3,251.82 = 2,220.80/x
  3. Step 3: Cross multiply
    2,345.64x = 3,251.82 × 2,220.80
  4. Step 4: Simplify right side
    2,345.64x = 7,221,641.86
  5. Step 5: Solve for x
    x = 7,221,641.86/2,345.64
  6. Step 6: Final answer
    x = 3,078.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.