Home / 3,840.12-5,761.80-3,182.40

Finding the Fourth Proportional to 3,840.12, 5,761.80 and 3,182.40

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Solution

The fourth proportional to 3,840.12, 5,761.80 and 3,182.40 is: 4,774.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.12 : 5,761.80 = 3,182.40 : x
  2. Step 2: Convert to fraction form
    3,840.12/5,761.80 = 3,182.40/x
  3. Step 3: Cross multiply
    3,840.12x = 5,761.80 × 3,182.40
  4. Step 4: Simplify right side
    3,840.12x = 18,336,352.32
  5. Step 5: Solve for x
    x = 18,336,352.32/3,840.12
  6. Step 6: Final answer
    x = 4,774.94

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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.