Home / 3,905.32-5,853.86-2,672.40

Finding the Fourth Proportional to 3,905.32, 5,853.86 and 2,672.40

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Solution

The fourth proportional to 3,905.32, 5,853.86 and 2,672.40 is: 4,005.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.32 : 5,853.86 = 2,672.40 : x
  2. Step 2: Convert to fraction form
    3,905.32/5,853.86 = 2,672.40/x
  3. Step 3: Cross multiply
    3,905.32x = 5,853.86 × 2,672.40
  4. Step 4: Simplify right side
    3,905.32x = 15,643,855.46
  5. Step 5: Solve for x
    x = 15,643,855.46/3,905.32
  6. Step 6: Final answer
    x = 4,005.78

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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.