Home / 2,853.14-4,278.87-1,209.65

Finding the Fourth Proportional to 2,853.14, 4,278.87 and 1,209.65

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Solution

The fourth proportional to 2,853.14, 4,278.87 and 1,209.65 is: 1,814.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.14 : 4,278.87 = 1,209.65 : x
  2. Step 2: Convert to fraction form
    2,853.14/4,278.87 = 1,209.65/x
  3. Step 3: Cross multiply
    2,853.14x = 4,278.87 × 1,209.65
  4. Step 4: Simplify right side
    2,853.14x = 5,175,935.10
  5. Step 5: Solve for x
    x = 5,175,935.10/2,853.14
  6. Step 6: Final answer
    x = 1,814.12

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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.