Home / 3,840.38-5,760.32-1,375.07

Finding the Fourth Proportional to 3,840.38, 5,760.32 and 1,375.07

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Solution

The fourth proportional to 3,840.38, 5,760.32 and 1,375.07 is: 2,062.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.38 : 5,760.32 = 1,375.07 : x
  2. Step 2: Convert to fraction form
    3,840.38/5,760.32 = 1,375.07/x
  3. Step 3: Cross multiply
    3,840.38x = 5,760.32 × 1,375.07
  4. Step 4: Simplify right side
    3,840.38x = 7,920,807.55
  5. Step 5: Solve for x
    x = 7,920,807.55/3,840.38
  6. Step 6: Final answer
    x = 2,062.51

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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.