Home / 3,013.08-4,519.70-821.80

Finding the Fourth Proportional to 3,013.08, 4,519.70 and 821.80

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Solution

The fourth proportional to 3,013.08, 4,519.70 and 821.80 is: 1,232.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,013.08 : 4,519.70 = 821.80 : x
  2. Step 2: Convert to fraction form
    3,013.08/4,519.70 = 821.80/x
  3. Step 3: Cross multiply
    3,013.08x = 4,519.70 × 821.80
  4. Step 4: Simplify right side
    3,013.08x = 3,714,289.46
  5. Step 5: Solve for x
    x = 3,714,289.46/3,013.08
  6. Step 6: Final answer
    x = 1,232.72

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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.