Home / 9,791.89-13,512.34-5,315.59

Finding the Fourth Proportional to 9,791.89, 13,512.34 and 5,315.59

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Solution

The fourth proportional to 9,791.89, 13,512.34 and 5,315.59 is: 7,335.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,791.89 : 13,512.34 = 5,315.59 : x
  2. Step 2: Convert to fraction form
    9,791.89/13,512.34 = 5,315.59/x
  3. Step 3: Cross multiply
    9,791.89x = 13,512.34 × 5,315.59
  4. Step 4: Simplify right side
    9,791.89x = 71,826,053.02
  5. Step 5: Solve for x
    x = 71,826,053.02/9,791.89
  6. Step 6: Final answer
    x = 7,335.26

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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.