Home / 5,920.66-8,170.95-3,830.86

Finding the Fourth Proportional to 5,920.66, 8,170.95 and 3,830.86

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Solution

The fourth proportional to 5,920.66, 8,170.95 and 3,830.86 is: 5,286.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,920.66 : 8,170.95 = 3,830.86 : x
  2. Step 2: Convert to fraction form
    5,920.66/8,170.95 = 3,830.86/x
  3. Step 3: Cross multiply
    5,920.66x = 8,170.95 × 3,830.86
  4. Step 4: Simplify right side
    5,920.66x = 31,301,765.52
  5. Step 5: Solve for x
    x = 31,301,765.52/5,920.66
  6. Step 6: Final answer
    x = 5,286.87

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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.