Home / 4,200.12-6,299.88-1,278.25

Finding the Fourth Proportional to 4,200.12, 6,299.88 and 1,278.25

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Solution

The fourth proportional to 4,200.12, 6,299.88 and 1,278.25 is: 1,917.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,200.12 : 6,299.88 = 1,278.25 : x
  2. Step 2: Convert to fraction form
    4,200.12/6,299.88 = 1,278.25/x
  3. Step 3: Cross multiply
    4,200.12x = 6,299.88 × 1,278.25
  4. Step 4: Simplify right side
    4,200.12x = 8,052,821.61
  5. Step 5: Solve for x
    x = 8,052,821.61/4,200.12
  6. Step 6: Final answer
    x = 1,917.28

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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.