Home / 5,517.76-7,615.92-3,420.68

Finding the Fourth Proportional to 5,517.76, 7,615.92 and 3,420.68

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Solution

The fourth proportional to 5,517.76, 7,615.92 and 3,420.68 is: 4,721.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,517.76 : 7,615.92 = 3,420.68 : x
  2. Step 2: Convert to fraction form
    5,517.76/7,615.92 = 3,420.68/x
  3. Step 3: Cross multiply
    5,517.76x = 7,615.92 × 3,420.68
  4. Step 4: Simplify right side
    5,517.76x = 26,051,625.23
  5. Step 5: Solve for x
    x = 26,051,625.23/5,517.76
  6. Step 6: Final answer
    x = 4,721.41

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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.