Home / 3,159.36-4,747.68-1,861.20

Finding the Fourth Proportional to 3,159.36, 4,747.68 and 1,861.20

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Solution

The fourth proportional to 3,159.36, 4,747.68 and 1,861.20 is: 2,796.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.36 : 4,747.68 = 1,861.20 : x
  2. Step 2: Convert to fraction form
    3,159.36/4,747.68 = 1,861.20/x
  3. Step 3: Cross multiply
    3,159.36x = 4,747.68 × 1,861.20
  4. Step 4: Simplify right side
    3,159.36x = 8,836,382.02
  5. Step 5: Solve for x
    x = 8,836,382.02/3,159.36
  6. Step 6: Final answer
    x = 2,796.89

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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.