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Finding the Fourth Proportional to 1,775.40, 2,658.84 and 1,408.98

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Solution

The fourth proportional to 1,775.40, 2,658.84 and 1,408.98 is: 2,110.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775.40 : 2,658.84 = 1,408.98 : x
  2. Step 2: Convert to fraction form
    1,775.40/2,658.84 = 1,408.98/x
  3. Step 3: Cross multiply
    1,775.40x = 2,658.84 × 1,408.98
  4. Step 4: Simplify right side
    1,775.40x = 3,746,252.38
  5. Step 5: Solve for x
    x = 3,746,252.38/1,775.40
  6. Step 6: Final answer
    x = 2,110.09

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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.