Home / 5,515.78-8,275.21-2,231.18

Finding the Fourth Proportional to 5,515.78, 8,275.21 and 2,231.18

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Solution

The fourth proportional to 5,515.78, 8,275.21 and 2,231.18 is: 3,347.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.78 : 8,275.21 = 2,231.18 : x
  2. Step 2: Convert to fraction form
    5,515.78/8,275.21 = 2,231.18/x
  3. Step 3: Cross multiply
    5,515.78x = 8,275.21 × 2,231.18
  4. Step 4: Simplify right side
    5,515.78x = 18,463,430.52
  5. Step 5: Solve for x
    x = 18,463,430.52/5,515.78
  6. Step 6: Final answer
    x = 3,347.39

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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.