Home / 4,200.72-6,301.80-1,278.32

Finding the Fourth Proportional to 4,200.72, 6,301.80 and 1,278.32

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Solution

The fourth proportional to 4,200.72, 6,301.80 and 1,278.32 is: 1,917.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,200.72 : 6,301.80 = 1,278.32 : x
  2. Step 2: Convert to fraction form
    4,200.72/6,301.80 = 1,278.32/x
  3. Step 3: Cross multiply
    4,200.72x = 6,301.80 × 1,278.32
  4. Step 4: Simplify right side
    4,200.72x = 8,055,716.98
  5. Step 5: Solve for x
    x = 8,055,716.98/4,200.72
  6. Step 6: Final answer
    x = 1,917.70

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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.