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Finding the Fourth Proportional to 1,887.56, 2,827.18 and 1,154.91

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Solution

The fourth proportional to 1,887.56, 2,827.18 and 1,154.91 is: 1,729.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,887.56 : 2,827.18 = 1,154.91 : x
  2. Step 2: Convert to fraction form
    1,887.56/2,827.18 = 1,154.91/x
  3. Step 3: Cross multiply
    1,887.56x = 2,827.18 × 1,154.91
  4. Step 4: Simplify right side
    1,887.56x = 3,265,138.45
  5. Step 5: Solve for x
    x = 3,265,138.45/1,887.56
  6. Step 6: Final answer
    x = 1,729.82

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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.