Home / 8,074.13-11,138.51-5,717.57

Finding the Fourth Proportional to 8,074.13, 11,138.51 and 5,717.57

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Solution

The fourth proportional to 8,074.13, 11,138.51 and 5,717.57 is: 7,887.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,074.13 : 11,138.51 = 5,717.57 : x
  2. Step 2: Convert to fraction form
    8,074.13/11,138.51 = 5,717.57/x
  3. Step 3: Cross multiply
    8,074.13x = 11,138.51 × 5,717.57
  4. Step 4: Simplify right side
    8,074.13x = 63,685,169.22
  5. Step 5: Solve for x
    x = 63,685,169.22/8,074.13
  6. Step 6: Final answer
    x = 7,887.56

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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.