Home / 8,917.43-12,305.84-5,140.58

Finding the Fourth Proportional to 8,917.43, 12,305.84 and 5,140.58

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Solution

The fourth proportional to 8,917.43, 12,305.84 and 5,140.58 is: 7,093.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.43 : 12,305.84 = 5,140.58 : x
  2. Step 2: Convert to fraction form
    8,917.43/12,305.84 = 5,140.58/x
  3. Step 3: Cross multiply
    8,917.43x = 12,305.84 × 5,140.58
  4. Step 4: Simplify right side
    8,917.43x = 63,259,067.76
  5. Step 5: Solve for x
    x = 63,259,067.76/8,917.43
  6. Step 6: Final answer
    x = 7,093.87

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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.