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Finding the Fourth Proportional to 2,103.36, 3,154.68 and 564

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Solution

The fourth proportional to 2,103.36, 3,154.68 and 564 is: 845.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,103.36 : 3,154.68 = 564 : x
  2. Step 2: Convert to fraction form
    2,103.36/3,154.68 = 564/x
  3. Step 3: Cross multiply
    2,103.36x = 3,154.68 × 564
  4. Step 4: Simplify right side
    2,103.36x = 1,779,239.52
  5. Step 5: Solve for x
    x = 1,779,239.52/2,103.36
  6. Step 6: Final answer
    x = 845.90

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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.