Home / 8,131.05-11,220.35-5,254.74

Finding the Fourth Proportional to 8,131.05, 11,220.35 and 5,254.74

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Solution

The fourth proportional to 8,131.05, 11,220.35 and 5,254.74 is: 7,251.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.05 : 11,220.35 = 5,254.74 : x
  2. Step 2: Convert to fraction form
    8,131.05/11,220.35 = 5,254.74/x
  3. Step 3: Cross multiply
    8,131.05x = 11,220.35 × 5,254.74
  4. Step 4: Simplify right side
    8,131.05x = 58,959,995.69
  5. Step 5: Solve for x
    x = 58,959,995.69/8,131.05
  6. Step 6: Final answer
    x = 7,251.22

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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.