Home / 5,515.12-8,275.43-3,434.60

Finding the Fourth Proportional to 5,515.12, 8,275.43 and 3,434.60

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Solution

The fourth proportional to 5,515.12, 8,275.43 and 3,434.60 is: 5,153.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.12 : 8,275.43 = 3,434.60 : x
  2. Step 2: Convert to fraction form
    5,515.12/8,275.43 = 3,434.60/x
  3. Step 3: Cross multiply
    5,515.12x = 8,275.43 × 3,434.60
  4. Step 4: Simplify right side
    5,515.12x = 28,422,821.15
  5. Step 5: Solve for x
    x = 28,422,821.15/5,515.12
  6. Step 6: Final answer
    x = 5,153.62

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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.