Home / 2,681.91-4,023.64-1,121.11

Finding the Fourth Proportional to 2,681.91, 4,023.64 and 1,121.11

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Solution

The fourth proportional to 2,681.91, 4,023.64 and 1,121.11 is: 1,681.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.91 : 4,023.64 = 1,121.11 : x
  2. Step 2: Convert to fraction form
    2,681.91/4,023.64 = 1,121.11/x
  3. Step 3: Cross multiply
    2,681.91x = 4,023.64 × 1,121.11
  4. Step 4: Simplify right side
    2,681.91x = 4,510,934.38
  5. Step 5: Solve for x
    x = 4,510,934.38/2,681.91
  6. Step 6: Final answer
    x = 1,681.99

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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.