Home / 2,114.91-2,918.87-1,231.00

Finding the Fourth Proportional to 2,114.91, 2,918.87 and 1,231.00

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Solution

The fourth proportional to 2,114.91, 2,918.87 and 1,231.00 is: 1,698.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.91 : 2,918.87 = 1,231.00 : x
  2. Step 2: Convert to fraction form
    2,114.91/2,918.87 = 1,231.00/x
  3. Step 3: Cross multiply
    2,114.91x = 2,918.87 × 1,231.00
  4. Step 4: Simplify right side
    2,114.91x = 3,593,118.12
  5. Step 5: Solve for x
    x = 3,593,118.12/2,114.91
  6. Step 6: Final answer
    x = 1,698.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.