Home / 5,520.90-7,617.06-3,930.47

Finding the Fourth Proportional to 5,520.90, 7,617.06 and 3,930.47

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Solution

The fourth proportional to 5,520.90, 7,617.06 and 3,930.47 is: 5,422.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,520.90 : 7,617.06 = 3,930.47 : x
  2. Step 2: Convert to fraction form
    5,520.90/7,617.06 = 3,930.47/x
  3. Step 3: Cross multiply
    5,520.90x = 7,617.06 × 3,930.47
  4. Step 4: Simplify right side
    5,520.90x = 29,938,587.73
  5. Step 5: Solve for x
    x = 29,938,587.73/5,520.90
  6. Step 6: Final answer
    x = 5,422.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.