Home / 3,621.12-5,429.71-1,281.03

Finding the Fourth Proportional to 3,621.12, 5,429.71 and 1,281.03

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Solution

The fourth proportional to 3,621.12, 5,429.71 and 1,281.03 is: 1,920.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.12 : 5,429.71 = 1,281.03 : x
  2. Step 2: Convert to fraction form
    3,621.12/5,429.71 = 1,281.03/x
  3. Step 3: Cross multiply
    3,621.12x = 5,429.71 × 1,281.03
  4. Step 4: Simplify right side
    3,621.12x = 6,955,621.40
  5. Step 5: Solve for x
    x = 6,955,621.40/3,621.12
  6. Step 6: Final answer
    x = 1,920.85

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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.