Home / 4,200.85-6,301.82-1,278.78

Finding the Fourth Proportional to 4,200.85, 6,301.82 and 1,278.78

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Solution

The fourth proportional to 4,200.85, 6,301.82 and 1,278.78 is: 1,918.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,200.85 : 6,301.82 = 1,278.78 : x
  2. Step 2: Convert to fraction form
    4,200.85/6,301.82 = 1,278.78/x
  3. Step 3: Cross multiply
    4,200.85x = 6,301.82 × 1,278.78
  4. Step 4: Simplify right side
    4,200.85x = 8,058,641.38
  5. Step 5: Solve for x
    x = 8,058,641.38/4,200.85
  6. Step 6: Final answer
    x = 1,918.34

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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.