Home / 1,373.64-2,060.40-399.75

Finding the Fourth Proportional to 1,373.64, 2,060.40 and 399.75

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Solution

The fourth proportional to 1,373.64, 2,060.40 and 399.75 is: 599.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,373.64 : 2,060.40 = 399.75 : x
  2. Step 2: Convert to fraction form
    1,373.64/2,060.40 = 399.75/x
  3. Step 3: Cross multiply
    1,373.64x = 2,060.40 × 399.75
  4. Step 4: Simplify right side
    1,373.64x = 823,644.90
  5. Step 5: Solve for x
    x = 823,644.90/1,373.64
  6. Step 6: Final answer
    x = 599.61

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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.