Home / 9,115.56-12,579.33-5,340.66

Finding the Fourth Proportional to 9,115.56, 12,579.33 and 5,340.66

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Solution

The fourth proportional to 9,115.56, 12,579.33 and 5,340.66 is: 7,370.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.56 : 12,579.33 = 5,340.66 : x
  2. Step 2: Convert to fraction form
    9,115.56/12,579.33 = 5,340.66/x
  3. Step 3: Cross multiply
    9,115.56x = 12,579.33 × 5,340.66
  4. Step 4: Simplify right side
    9,115.56x = 67,181,924.56
  5. Step 5: Solve for x
    x = 67,181,924.56/9,115.56
  6. Step 6: Final answer
    x = 7,370.03

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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.