Home / 6,138.90-8,473.55-3,620.81

Finding the Fourth Proportional to 6,138.90, 8,473.55 and 3,620.81

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Solution

The fourth proportional to 6,138.90, 8,473.55 and 3,620.81 is: 4,997.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,138.90 : 8,473.55 = 3,620.81 : x
  2. Step 2: Convert to fraction form
    6,138.90/8,473.55 = 3,620.81/x
  3. Step 3: Cross multiply
    6,138.90x = 8,473.55 × 3,620.81
  4. Step 4: Simplify right side
    6,138.90x = 30,681,117.66
  5. Step 5: Solve for x
    x = 30,681,117.66/6,138.90
  6. Step 6: Final answer
    x = 4,997.82

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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.