Home / 2,814.16-4,221.24-762.32

Finding the Fourth Proportional to 2,814.16, 4,221.24 and 762.32

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Solution

The fourth proportional to 2,814.16, 4,221.24 and 762.32 is: 1,143.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.16 : 4,221.24 = 762.32 : x
  2. Step 2: Convert to fraction form
    2,814.16/4,221.24 = 762.32/x
  3. Step 3: Cross multiply
    2,814.16x = 4,221.24 × 762.32
  4. Step 4: Simplify right side
    2,814.16x = 3,217,935.68
  5. Step 5: Solve for x
    x = 3,217,935.68/2,814.16
  6. Step 6: Final answer
    x = 1,143.48

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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.