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Finding the Fourth Proportional to 1,187.17, 1,776.87 and 1,073.49

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Solution

The fourth proportional to 1,187.17, 1,776.87 and 1,073.49 is: 1,606.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187.17 : 1,776.87 = 1,073.49 : x
  2. Step 2: Convert to fraction form
    1,187.17/1,776.87 = 1,073.49/x
  3. Step 3: Cross multiply
    1,187.17x = 1,776.87 × 1,073.49
  4. Step 4: Simplify right side
    1,187.17x = 1,907,452.18
  5. Step 5: Solve for x
    x = 1,907,452.18/1,187.17
  6. Step 6: Final answer
    x = 1,606.72

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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.