Home / 5,638.47-7,781.03-3,370.85

Finding the Fourth Proportional to 5,638.47, 7,781.03 and 3,370.85

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Solution

The fourth proportional to 5,638.47, 7,781.03 and 3,370.85 is: 4,651.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.47 : 7,781.03 = 3,370.85 : x
  2. Step 2: Convert to fraction form
    5,638.47/7,781.03 = 3,370.85/x
  3. Step 3: Cross multiply
    5,638.47x = 7,781.03 × 3,370.85
  4. Step 4: Simplify right side
    5,638.47x = 26,228,668.12
  5. Step 5: Solve for x
    x = 26,228,668.12/5,638.47
  6. Step 6: Final answer
    x = 4,651.74

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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.