Home / 5,645.76-7,791.18-3,127.95

Finding the Fourth Proportional to 5,645.76, 7,791.18 and 3,127.95

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Solution

The fourth proportional to 5,645.76, 7,791.18 and 3,127.95 is: 4,316.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,645.76 : 7,791.18 = 3,127.95 : x
  2. Step 2: Convert to fraction form
    5,645.76/7,791.18 = 3,127.95/x
  3. Step 3: Cross multiply
    5,645.76x = 7,791.18 × 3,127.95
  4. Step 4: Simplify right side
    5,645.76x = 24,370,421.48
  5. Step 5: Solve for x
    x = 24,370,421.48/5,645.76
  6. Step 6: Final answer
    x = 4,316.59

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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.