Home / 1,942.85-2,681.20-1,103.53

Finding the Fourth Proportional to 1,942.85, 2,681.20 and 1,103.53

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Solution

The fourth proportional to 1,942.85, 2,681.20 and 1,103.53 is: 1,522.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.85 : 2,681.20 = 1,103.53 : x
  2. Step 2: Convert to fraction form
    1,942.85/2,681.20 = 1,103.53/x
  3. Step 3: Cross multiply
    1,942.85x = 2,681.20 × 1,103.53
  4. Step 4: Simplify right side
    1,942.85x = 2,958,765.71
  5. Step 5: Solve for x
    x = 2,958,765.71/1,942.85
  6. Step 6: Final answer
    x = 1,522.90

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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.