Home / 2,110.24-2,912.40-1,281.76

Finding the Fourth Proportional to 2,110.24, 2,912.40 and 1,281.76

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Solution

The fourth proportional to 2,110.24, 2,912.40 and 1,281.76 is: 1,768.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,110.24 : 2,912.40 = 1,281.76 : x
  2. Step 2: Convert to fraction form
    2,110.24/2,912.40 = 1,281.76/x
  3. Step 3: Cross multiply
    2,110.24x = 2,912.40 × 1,281.76
  4. Step 4: Simplify right side
    2,110.24x = 3,732,997.82
  5. Step 5: Solve for x
    x = 3,732,997.82/2,110.24
  6. Step 6: Final answer
    x = 1,768.99

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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.