Home / 9,161.97-12,642.92-5,128.13

Finding the Fourth Proportional to 9,161.97, 12,642.92 and 5,128.13

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Solution

The fourth proportional to 9,161.97, 12,642.92 and 5,128.13 is: 7,076.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,161.97 : 12,642.92 = 5,128.13 : x
  2. Step 2: Convert to fraction form
    9,161.97/12,642.92 = 5,128.13/x
  3. Step 3: Cross multiply
    9,161.97x = 12,642.92 × 5,128.13
  4. Step 4: Simplify right side
    9,161.97x = 64,834,537.34
  5. Step 5: Solve for x
    x = 64,834,537.34/9,161.97
  6. Step 6: Final answer
    x = 7,076.48

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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.