Home / 1,272.14-1,899-1,099.91

Finding the Fourth Proportional to 1,272.14, 1,899 and 1,099.91

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Solution

The fourth proportional to 1,272.14, 1,899 and 1,099.91 is: 1,641.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272.14 : 1,899 = 1,099.91 : x
  2. Step 2: Convert to fraction form
    1,272.14/1,899 = 1,099.91/x
  3. Step 3: Cross multiply
    1,272.14x = 1,899 × 1,099.91
  4. Step 4: Simplify right side
    1,272.14x = 2,088,733.84
  5. Step 5: Solve for x
    x = 2,088,733.84/1,272.14
  6. Step 6: Final answer
    x = 1,641.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.