Home / 3,013.35-4,519.29-821.55

Finding the Fourth Proportional to 3,013.35, 4,519.29 and 821.55

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Solution

The fourth proportional to 3,013.35, 4,519.29 and 821.55 is: 1,232.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,013.35 : 4,519.29 = 821.55 : x
  2. Step 2: Convert to fraction form
    3,013.35/4,519.29 = 821.55/x
  3. Step 3: Cross multiply
    3,013.35x = 4,519.29 × 821.55
  4. Step 4: Simplify right side
    3,013.35x = 3,712,822.70
  5. Step 5: Solve for x
    x = 3,712,822.70/3,013.35
  6. Step 6: Final answer
    x = 1,232.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.