Home / 8,638.73-11,921.57-5,101.93

Finding the Fourth Proportional to 8,638.73, 11,921.57 and 5,101.93

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Solution

The fourth proportional to 8,638.73, 11,921.57 and 5,101.93 is: 7,040.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638.73 : 11,921.57 = 5,101.93 : x
  2. Step 2: Convert to fraction form
    8,638.73/11,921.57 = 5,101.93/x
  3. Step 3: Cross multiply
    8,638.73x = 11,921.57 × 5,101.93
  4. Step 4: Simplify right side
    8,638.73x = 60,822,998.58
  5. Step 5: Solve for x
    x = 60,822,998.58/8,638.73
  6. Step 6: Final answer
    x = 7,040.74

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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.