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Finding the Fourth Proportional to 2,690.84, 4,036.25 and 743.03

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Solution

The fourth proportional to 2,690.84, 4,036.25 and 743.03 is: 1,114.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.84 : 4,036.25 = 743.03 : x
  2. Step 2: Convert to fraction form
    2,690.84/4,036.25 = 743.03/x
  3. Step 3: Cross multiply
    2,690.84x = 4,036.25 × 743.03
  4. Step 4: Simplify right side
    2,690.84x = 2,999,061.21
  5. Step 5: Solve for x
    x = 2,999,061.21/2,690.84
  6. Step 6: Final answer
    x = 1,114.55

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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.