Home / 9,941.78-13,720.92-5,749.22

Finding the Fourth Proportional to 9,941.78, 13,720.92 and 5,749.22

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Solution

The fourth proportional to 9,941.78, 13,720.92 and 5,749.22 is: 7,934.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,941.78 : 13,720.92 = 5,749.22 : x
  2. Step 2: Convert to fraction form
    9,941.78/13,720.92 = 5,749.22/x
  3. Step 3: Cross multiply
    9,941.78x = 13,720.92 × 5,749.22
  4. Step 4: Simplify right side
    9,941.78x = 78,884,587.68
  5. Step 5: Solve for x
    x = 78,884,587.68/9,941.78
  6. Step 6: Final answer
    x = 7,934.65

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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.