Home / 9,121.07-12,588.26-5,143.43

Finding the Fourth Proportional to 9,121.07, 12,588.26 and 5,143.43

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Solution

The fourth proportional to 9,121.07, 12,588.26 and 5,143.43 is: 7,098.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.07 : 12,588.26 = 5,143.43 : x
  2. Step 2: Convert to fraction form
    9,121.07/12,588.26 = 5,143.43/x
  3. Step 3: Cross multiply
    9,121.07x = 12,588.26 × 5,143.43
  4. Step 4: Simplify right side
    9,121.07x = 64,746,745.47
  5. Step 5: Solve for x
    x = 64,746,745.47/9,121.07
  6. Step 6: Final answer
    x = 7,098.59

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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.