Home / 4,243.20-6,355.20-2,515.20

Finding the Fourth Proportional to 4,243.20, 6,355.20 and 2,515.20

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Solution

The fourth proportional to 4,243.20, 6,355.20 and 2,515.20 is: 3,767.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,243.20 : 6,355.20 = 2,515.20 : x
  2. Step 2: Convert to fraction form
    4,243.20/6,355.20 = 2,515.20/x
  3. Step 3: Cross multiply
    4,243.20x = 6,355.20 × 2,515.20
  4. Step 4: Simplify right side
    4,243.20x = 15,984,599.04
  5. Step 5: Solve for x
    x = 15,984,599.04/4,243.20
  6. Step 6: Final answer
    x = 3,767.11

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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.