Home / 8,126.93-12,189.15-2,579.55

Finding the Fourth Proportional to 8,126.93, 12,189.15 and 2,579.55

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Solution

The fourth proportional to 8,126.93, 12,189.15 and 2,579.55 is: 3,868.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.93 : 12,189.15 = 2,579.55 : x
  2. Step 2: Convert to fraction form
    8,126.93/12,189.15 = 2,579.55/x
  3. Step 3: Cross multiply
    8,126.93x = 12,189.15 × 2,579.55
  4. Step 4: Simplify right side
    8,126.93x = 31,442,521.88
  5. Step 5: Solve for x
    x = 31,442,521.88/8,126.93
  6. Step 6: Final answer
    x = 3,868.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.