Home / 4,778.39-7,164.85-1,853.28

Finding the Fourth Proportional to 4,778.39, 7,164.85 and 1,853.28

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Solution

The fourth proportional to 4,778.39, 7,164.85 and 1,853.28 is: 2,778.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.39 : 7,164.85 = 1,853.28 : x
  2. Step 2: Convert to fraction form
    4,778.39/7,164.85 = 1,853.28/x
  3. Step 3: Cross multiply
    4,778.39x = 7,164.85 × 1,853.28
  4. Step 4: Simplify right side
    4,778.39x = 13,278,428.12
  5. Step 5: Solve for x
    x = 13,278,428.12/4,778.39
  6. Step 6: Final answer
    x = 2,778.85

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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.