Home / 9,115.66-12,579.87-5,341.33

Finding the Fourth Proportional to 9,115.66, 12,579.87 and 5,341.33

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Solution

The fourth proportional to 9,115.66, 12,579.87 and 5,341.33 is: 7,371.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.66 : 12,579.87 = 5,341.33 : x
  2. Step 2: Convert to fraction form
    9,115.66/12,579.87 = 5,341.33/x
  3. Step 3: Cross multiply
    9,115.66x = 12,579.87 × 5,341.33
  4. Step 4: Simplify right side
    9,115.66x = 67,193,237.03
  5. Step 5: Solve for x
    x = 67,193,237.03/9,115.66
  6. Step 6: Final answer
    x = 7,371.19

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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.