Home / 9,145.92-12,619.62-5,165.58

Finding the Fourth Proportional to 9,145.92, 12,619.62 and 5,165.58

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Solution

The fourth proportional to 9,145.92, 12,619.62 and 5,165.58 is: 7,127.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.92 : 12,619.62 = 5,165.58 : x
  2. Step 2: Convert to fraction form
    9,145.92/12,619.62 = 5,165.58/x
  3. Step 3: Cross multiply
    9,145.92x = 12,619.62 × 5,165.58
  4. Step 4: Simplify right side
    9,145.92x = 65,187,656.68
  5. Step 5: Solve for x
    x = 65,187,656.68/9,145.92
  6. Step 6: Final answer
    x = 7,127.51

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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.