Home / 1,276.08-1,908.54-1,101.12

Finding the Fourth Proportional to 1,276.08, 1,908.54 and 1,101.12

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Solution

The fourth proportional to 1,276.08, 1,908.54 and 1,101.12 is: 1,646.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.08 : 1,908.54 = 1,101.12 : x
  2. Step 2: Convert to fraction form
    1,276.08/1,908.54 = 1,101.12/x
  3. Step 3: Cross multiply
    1,276.08x = 1,908.54 × 1,101.12
  4. Step 4: Simplify right side
    1,276.08x = 2,101,531.56
  5. Step 5: Solve for x
    x = 2,101,531.56/1,276.08
  6. Step 6: Final answer
    x = 1,646.87

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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.