Home / 3,840.54-5,760.90-1,374.12

Finding the Fourth Proportional to 3,840.54, 5,760.90 and 1,374.12

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Solution

The fourth proportional to 3,840.54, 5,760.90 and 1,374.12 is: 2,061.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.54 : 5,760.90 = 1,374.12 : x
  2. Step 2: Convert to fraction form
    3,840.54/5,760.90 = 1,374.12/x
  3. Step 3: Cross multiply
    3,840.54x = 5,760.90 × 1,374.12
  4. Step 4: Simplify right side
    3,840.54x = 7,916,167.91
  5. Step 5: Solve for x
    x = 7,916,167.91/3,840.54
  6. Step 6: Final answer
    x = 2,061.21

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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.