Home / 2,115.99-3,175.19-1,142.07

Finding the Fourth Proportional to 2,115.99, 3,175.19 and 1,142.07

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Solution

The fourth proportional to 2,115.99, 3,175.19 and 1,142.07 is: 1,713.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.99 : 3,175.19 = 1,142.07 : x
  2. Step 2: Convert to fraction form
    2,115.99/3,175.19 = 1,142.07/x
  3. Step 3: Cross multiply
    2,115.99x = 3,175.19 × 1,142.07
  4. Step 4: Simplify right side
    2,115.99x = 3,626,283.53
  5. Step 5: Solve for x
    x = 3,626,283.53/2,115.99
  6. Step 6: Final answer
    x = 1,713.75

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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.