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Finding the Fourth Proportional to 3,404, 4,697.51 and 1,988.66

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Solution

The fourth proportional to 3,404, 4,697.51 and 1,988.66 is: 2,744.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,404 : 4,697.51 = 1,988.66 : x
  2. Step 2: Convert to fraction form
    3,404/4,697.51 = 1,988.66/x
  3. Step 3: Cross multiply
    3,404x = 4,697.51 × 1,988.66
  4. Step 4: Simplify right side
    3,404x = 9,341,740.29
  5. Step 5: Solve for x
    x = 9,341,740.29/3,404
  6. Step 6: Final answer
    x = 2,744.34

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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.