Home / 9,120.54-12,589.47-5,344.92

Finding the Fourth Proportional to 9,120.54, 12,589.47 and 5,344.92

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Solution

The fourth proportional to 9,120.54, 12,589.47 and 5,344.92 is: 7,377.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.54 : 12,589.47 = 5,344.92 : x
  2. Step 2: Convert to fraction form
    9,120.54/12,589.47 = 5,344.92/x
  3. Step 3: Cross multiply
    9,120.54x = 12,589.47 × 5,344.92
  4. Step 4: Simplify right side
    9,120.54x = 67,289,709.99
  5. Step 5: Solve for x
    x = 67,289,709.99/9,120.54
  6. Step 6: Final answer
    x = 7,377.82

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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.