Home / 5,515.26-8,271.78-1,618.74

Finding the Fourth Proportional to 5,515.26, 8,271.78 and 1,618.74

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Solution

The fourth proportional to 5,515.26, 8,271.78 and 1,618.74 is: 2,427.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.26 : 8,271.78 = 1,618.74 : x
  2. Step 2: Convert to fraction form
    5,515.26/8,271.78 = 1,618.74/x
  3. Step 3: Cross multiply
    5,515.26x = 8,271.78 × 1,618.74
  4. Step 4: Simplify right side
    5,515.26x = 13,389,861.16
  5. Step 5: Solve for x
    x = 13,389,861.16/5,515.26
  6. Step 6: Final answer
    x = 2,427.78

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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.