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Finding the Fourth Proportional to 1,774.19, 2,658.02 and 1,187.89

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Solution

The fourth proportional to 1,774.19, 2,658.02 and 1,187.89 is: 1,779.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,774.19 : 2,658.02 = 1,187.89 : x
  2. Step 2: Convert to fraction form
    1,774.19/2,658.02 = 1,187.89/x
  3. Step 3: Cross multiply
    1,774.19x = 2,658.02 × 1,187.89
  4. Step 4: Simplify right side
    1,774.19x = 3,157,422.79
  5. Step 5: Solve for x
    x = 3,157,422.79/1,774.19
  6. Step 6: Final answer
    x = 1,779.64

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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.