Home / 9,119.20-12,584.58-5,139.96

Finding the Fourth Proportional to 9,119.20, 12,584.58 and 5,139.96

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Solution

The fourth proportional to 9,119.20, 12,584.58 and 5,139.96 is: 7,093.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,119.20 : 12,584.58 = 5,139.96 : x
  2. Step 2: Convert to fraction form
    9,119.20/12,584.58 = 5,139.96/x
  3. Step 3: Cross multiply
    9,119.20x = 12,584.58 × 5,139.96
  4. Step 4: Simplify right side
    9,119.20x = 64,684,237.82
  5. Step 5: Solve for x
    x = 64,684,237.82/9,119.20
  6. Step 6: Final answer
    x = 7,093.19

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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.