Home / 4,002.68-5,513.38-2,821.72

Finding the Fourth Proportional to 4,002.68, 5,513.38 and 2,821.72

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Solution

The fourth proportional to 4,002.68, 5,513.38 and 2,821.72 is: 3,886.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,002.68 : 5,513.38 = 2,821.72 : x
  2. Step 2: Convert to fraction form
    4,002.68/5,513.38 = 2,821.72/x
  3. Step 3: Cross multiply
    4,002.68x = 5,513.38 × 2,821.72
  4. Step 4: Simplify right side
    4,002.68x = 15,557,214.61
  5. Step 5: Solve for x
    x = 15,557,214.61/4,002.68
  6. Step 6: Final answer
    x = 3,886.70

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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.