Home / 3,013.13-4,519.35-821.68

Finding the Fourth Proportional to 3,013.13, 4,519.35 and 821.68

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Solution

The fourth proportional to 3,013.13, 4,519.35 and 821.68 is: 1,232.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,013.13 : 4,519.35 = 821.68 : x
  2. Step 2: Convert to fraction form
    3,013.13/4,519.35 = 821.68/x
  3. Step 3: Cross multiply
    3,013.13x = 4,519.35 × 821.68
  4. Step 4: Simplify right side
    3,013.13x = 3,713,448.21
  5. Step 5: Solve for x
    x = 3,713,448.21/3,013.13
  6. Step 6: Final answer
    x = 1,232.42

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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.