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Finding the Fourth Proportional to 5,720, 7,894.68 and 3,363.44

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Solution

The fourth proportional to 5,720, 7,894.68 and 3,363.44 is: 4,642.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,720 : 7,894.68 = 3,363.44 : x
  2. Step 2: Convert to fraction form
    5,720/7,894.68 = 3,363.44/x
  3. Step 3: Cross multiply
    5,720x = 7,894.68 × 3,363.44
  4. Step 4: Simplify right side
    5,720x = 26,553,282.50
  5. Step 5: Solve for x
    x = 26,553,282.50/5,720
  6. Step 6: Final answer
    x = 4,642.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.