Home / 7,643.28-11,462.32-2,712.21

Finding the Fourth Proportional to 7,643.28, 11,462.32 and 2,712.21

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Solution

The fourth proportional to 7,643.28, 11,462.32 and 2,712.21 is: 4,067.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,643.28 : 11,462.32 = 2,712.21 : x
  2. Step 2: Convert to fraction form
    7,643.28/11,462.32 = 2,712.21/x
  3. Step 3: Cross multiply
    7,643.28x = 11,462.32 × 2,712.21
  4. Step 4: Simplify right side
    7,643.28x = 31,088,218.93
  5. Step 5: Solve for x
    x = 31,088,218.93/7,643.28
  6. Step 6: Final answer
    x = 4,067.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.