Home / 2,378.72-3,282.64-1,330.78

Finding the Fourth Proportional to 2,378.72, 3,282.64 and 1,330.78

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Solution

The fourth proportional to 2,378.72, 3,282.64 and 1,330.78 is: 1,836.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.72 : 3,282.64 = 1,330.78 : x
  2. Step 2: Convert to fraction form
    2,378.72/3,282.64 = 1,330.78/x
  3. Step 3: Cross multiply
    2,378.72x = 3,282.64 × 1,330.78
  4. Step 4: Simplify right side
    2,378.72x = 4,368,471.66
  5. Step 5: Solve for x
    x = 4,368,471.66/2,378.72
  6. Step 6: Final answer
    x = 1,836.48

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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.