Home / 5,217.72-7,828.24-1,520.17

Finding the Fourth Proportional to 5,217.72, 7,828.24 and 1,520.17

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Solution

The fourth proportional to 5,217.72, 7,828.24 and 1,520.17 is: 2,280.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.72 : 7,828.24 = 1,520.17 : x
  2. Step 2: Convert to fraction form
    5,217.72/7,828.24 = 1,520.17/x
  3. Step 3: Cross multiply
    5,217.72x = 7,828.24 × 1,520.17
  4. Step 4: Simplify right side
    5,217.72x = 11,900,255.60
  5. Step 5: Solve for x
    x = 11,900,255.60/5,217.72
  6. Step 6: Final answer
    x = 2,280.74

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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.