Home / 1,378.64-2,057.50-1,232.72

Finding the Fourth Proportional to 1,378.64, 2,057.50 and 1,232.72

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Solution

The fourth proportional to 1,378.64, 2,057.50 and 1,232.72 is: 1,839.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.64 : 2,057.50 = 1,232.72 : x
  2. Step 2: Convert to fraction form
    1,378.64/2,057.50 = 1,232.72/x
  3. Step 3: Cross multiply
    1,378.64x = 2,057.50 × 1,232.72
  4. Step 4: Simplify right side
    1,378.64x = 2,536,321.40
  5. Step 5: Solve for x
    x = 2,536,321.40/1,378.64
  6. Step 6: Final answer
    x = 1,839.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.