Home / 5,515.17-8,272.80-1,619.70

Finding the Fourth Proportional to 5,515.17, 8,272.80 and 1,619.70

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Solution

The fourth proportional to 5,515.17, 8,272.80 and 1,619.70 is: 2,429.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.17 : 8,272.80 = 1,619.70 : x
  2. Step 2: Convert to fraction form
    5,515.17/8,272.80 = 1,619.70/x
  3. Step 3: Cross multiply
    5,515.17x = 8,272.80 × 1,619.70
  4. Step 4: Simplify right side
    5,515.17x = 13,399,454.16
  5. Step 5: Solve for x
    x = 13,399,454.16/5,515.17
  6. Step 6: Final answer
    x = 2,429.56

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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.