Home / 5,642.39-7,781.43-3,650.87

Finding the Fourth Proportional to 5,642.39, 7,781.43 and 3,650.87

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Solution

The fourth proportional to 5,642.39, 7,781.43 and 3,650.87 is: 5,034.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,642.39 : 7,781.43 = 3,650.87 : x
  2. Step 2: Convert to fraction form
    5,642.39/7,781.43 = 3,650.87/x
  3. Step 3: Cross multiply
    5,642.39x = 7,781.43 × 3,650.87
  4. Step 4: Simplify right side
    5,642.39x = 28,408,989.34
  5. Step 5: Solve for x
    x = 28,408,989.34/5,642.39
  6. Step 6: Final answer
    x = 5,034.92

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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.