Home / 3,638.44-5,444.70-2,178.28

Finding the Fourth Proportional to 3,638.44, 5,444.70 and 2,178.28

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Solution

The fourth proportional to 3,638.44, 5,444.70 and 2,178.28 is: 3,259.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.44 : 5,444.70 = 2,178.28 : x
  2. Step 2: Convert to fraction form
    3,638.44/5,444.70 = 2,178.28/x
  3. Step 3: Cross multiply
    3,638.44x = 5,444.70 × 2,178.28
  4. Step 4: Simplify right side
    3,638.44x = 11,860,081.12
  5. Step 5: Solve for x
    x = 11,860,081.12/3,638.44
  6. Step 6: Final answer
    x = 3,259.66

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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.