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Finding the Fourth Proportional to 4,270.62, 6,404.85 and 1,929.30

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Solution

The fourth proportional to 4,270.62, 6,404.85 and 1,929.30 is: 2,893.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,270.62 : 6,404.85 = 1,929.30 : x
  2. Step 2: Convert to fraction form
    4,270.62/6,404.85 = 1,929.30/x
  3. Step 3: Cross multiply
    4,270.62x = 6,404.85 × 1,929.30
  4. Step 4: Simplify right side
    4,270.62x = 12,356,877.11
  5. Step 5: Solve for x
    x = 12,356,877.11/4,270.62
  6. Step 6: Final answer
    x = 2,893.46

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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.