Home / 9,380.50-12,945.38-5,131.79

Finding the Fourth Proportional to 9,380.50, 12,945.38 and 5,131.79

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Solution

The fourth proportional to 9,380.50, 12,945.38 and 5,131.79 is: 7,082.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,380.50 : 12,945.38 = 5,131.79 : x
  2. Step 2: Convert to fraction form
    9,380.50/12,945.38 = 5,131.79/x
  3. Step 3: Cross multiply
    9,380.50x = 12,945.38 × 5,131.79
  4. Step 4: Simplify right side
    9,380.50x = 66,432,971.63
  5. Step 5: Solve for x
    x = 66,432,971.63/9,380.50
  6. Step 6: Final answer
    x = 7,082.03

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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.