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Finding the Fourth Proportional to 2,543.49, 3,814.88 and 694.31

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Solution

The fourth proportional to 2,543.49, 3,814.88 and 694.31 is: 1,041.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,543.49 : 3,814.88 = 694.31 : x
  2. Step 2: Convert to fraction form
    2,543.49/3,814.88 = 694.31/x
  3. Step 3: Cross multiply
    2,543.49x = 3,814.88 × 694.31
  4. Step 4: Simplify right side
    2,543.49x = 2,648,686.79
  5. Step 5: Solve for x
    x = 2,648,686.79/2,543.49
  6. Step 6: Final answer
    x = 1,041.36

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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.