Home / 9,391.30-12,959.67-5,199.28

Finding the Fourth Proportional to 9,391.30, 12,959.67 and 5,199.28

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Solution

The fourth proportional to 9,391.30, 12,959.67 and 5,199.28 is: 7,174.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,391.30 : 12,959.67 = 5,199.28 : x
  2. Step 2: Convert to fraction form
    9,391.30/12,959.67 = 5,199.28/x
  3. Step 3: Cross multiply
    9,391.30x = 12,959.67 × 5,199.28
  4. Step 4: Simplify right side
    9,391.30x = 67,380,953.04
  5. Step 5: Solve for x
    x = 67,380,953.04/9,391.30
  6. Step 6: Final answer
    x = 7,174.83

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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.