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Finding the Fourth Proportional to 1,682.52, 2,522.52 and 860.40

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Solution

The fourth proportional to 1,682.52, 2,522.52 and 860.40 is: 1,289.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682.52 : 2,522.52 = 860.40 : x
  2. Step 2: Convert to fraction form
    1,682.52/2,522.52 = 860.40/x
  3. Step 3: Cross multiply
    1,682.52x = 2,522.52 × 860.40
  4. Step 4: Simplify right side
    1,682.52x = 2,170,376.21
  5. Step 5: Solve for x
    x = 2,170,376.21/1,682.52
  6. Step 6: Final answer
    x = 1,289.96

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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.