Home / 4,201.20-6,300.12-1,278.48

Finding the Fourth Proportional to 4,201.20, 6,300.12 and 1,278.48

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Solution

The fourth proportional to 4,201.20, 6,300.12 and 1,278.48 is: 1,917.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,201.20 : 6,300.12 = 1,278.48 : x
  2. Step 2: Convert to fraction form
    4,201.20/6,300.12 = 1,278.48/x
  3. Step 3: Cross multiply
    4,201.20x = 6,300.12 × 1,278.48
  4. Step 4: Simplify right side
    4,201.20x = 8,054,577.42
  5. Step 5: Solve for x
    x = 8,054,577.42/4,201.20
  6. Step 6: Final answer
    x = 1,917.21

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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.