Home / 8,174.72-11,278.34-5,190.18

Finding the Fourth Proportional to 8,174.72, 11,278.34 and 5,190.18

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Solution

The fourth proportional to 8,174.72, 11,278.34 and 5,190.18 is: 7,160.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,174.72 : 11,278.34 = 5,190.18 : x
  2. Step 2: Convert to fraction form
    8,174.72/11,278.34 = 5,190.18/x
  3. Step 3: Cross multiply
    8,174.72x = 11,278.34 × 5,190.18
  4. Step 4: Simplify right side
    8,174.72x = 58,536,565.92
  5. Step 5: Solve for x
    x = 58,536,565.92/8,174.72
  6. Step 6: Final answer
    x = 7,160.68

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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.