Home / 5,515.90-8,272.87-1,818.18

Finding the Fourth Proportional to 5,515.90, 8,272.87 and 1,818.18

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Solution

The fourth proportional to 5,515.90, 8,272.87 and 1,818.18 is: 2,726.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.90 : 8,272.87 = 1,818.18 : x
  2. Step 2: Convert to fraction form
    5,515.90/8,272.87 = 1,818.18/x
  3. Step 3: Cross multiply
    5,515.90x = 8,272.87 × 1,818.18
  4. Step 4: Simplify right side
    5,515.90x = 15,041,566.78
  5. Step 5: Solve for x
    x = 15,041,566.78/5,515.90
  6. Step 6: Final answer
    x = 2,726.95

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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.