Home / 3,115.80-4,668.83-1,959.12

Finding the Fourth Proportional to 3,115.80, 4,668.83 and 1,959.12

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Solution

The fourth proportional to 3,115.80, 4,668.83 and 1,959.12 is: 2,935.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.80 : 4,668.83 = 1,959.12 : x
  2. Step 2: Convert to fraction form
    3,115.80/4,668.83 = 1,959.12/x
  3. Step 3: Cross multiply
    3,115.80x = 4,668.83 × 1,959.12
  4. Step 4: Simplify right side
    3,115.80x = 9,146,798.23
  5. Step 5: Solve for x
    x = 9,146,798.23/3,115.80
  6. Step 6: Final answer
    x = 2,935.62

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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.