Home / 4,203.75-6,305.63-1,125.75

Finding the Fourth Proportional to 4,203.75, 6,305.63 and 1,125.75

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Solution

The fourth proportional to 4,203.75, 6,305.63 and 1,125.75 is: 1,688.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,203.75 : 6,305.63 = 1,125.75 : x
  2. Step 2: Convert to fraction form
    4,203.75/6,305.63 = 1,125.75/x
  3. Step 3: Cross multiply
    4,203.75x = 6,305.63 × 1,125.75
  4. Step 4: Simplify right side
    4,203.75x = 7,098,562.97
  5. Step 5: Solve for x
    x = 7,098,562.97/4,203.75
  6. Step 6: Final answer
    x = 1,688.63

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Half scale
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Similar ratio
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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.