Home / 8,972.17-12,379.45-5,144.23

Finding the Fourth Proportional to 8,972.17, 12,379.45 and 5,144.23

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Solution

The fourth proportional to 8,972.17, 12,379.45 and 5,144.23 is: 7,097.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.17 : 12,379.45 = 5,144.23 : x
  2. Step 2: Convert to fraction form
    8,972.17/12,379.45 = 5,144.23/x
  3. Step 3: Cross multiply
    8,972.17x = 12,379.45 × 5,144.23
  4. Step 4: Simplify right side
    8,972.17x = 63,682,763.45
  5. Step 5: Solve for x
    x = 63,682,763.45/8,972.17
  6. Step 6: Final answer
    x = 7,097.81

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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.