Home / 9,383.10-12,947.43-5,190.78

Finding the Fourth Proportional to 9,383.10, 12,947.43 and 5,190.78

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Solution

The fourth proportional to 9,383.10, 12,947.43 and 5,190.78 is: 7,162.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,383.10 : 12,947.43 = 5,190.78 : x
  2. Step 2: Convert to fraction form
    9,383.10/12,947.43 = 5,190.78/x
  3. Step 3: Cross multiply
    9,383.10x = 12,947.43 × 5,190.78
  4. Step 4: Simplify right side
    9,383.10x = 67,207,260.70
  5. Step 5: Solve for x
    x = 67,207,260.70/9,383.10
  6. Step 6: Final answer
    x = 7,162.59

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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.