Home / 8,107.29-12,144.74-7,422.03

Finding the Fourth Proportional to 8,107.29, 12,144.74 and 7,422.03

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Solution

The fourth proportional to 8,107.29, 12,144.74 and 7,422.03 is: 11,118.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,107.29 : 12,144.74 = 7,422.03 : x
  2. Step 2: Convert to fraction form
    8,107.29/12,144.74 = 7,422.03/x
  3. Step 3: Cross multiply
    8,107.29x = 12,144.74 × 7,422.03
  4. Step 4: Simplify right side
    8,107.29x = 90,138,587.51
  5. Step 5: Solve for x
    x = 90,138,587.51/8,107.29
  6. Step 6: Final answer
    x = 11,118.21

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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.