Home / 2,422.81-3,636.11-1,687.60

Finding the Fourth Proportional to 2,422.81, 3,636.11 and 1,687.60

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Solution

The fourth proportional to 2,422.81, 3,636.11 and 1,687.60 is: 2,532.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,422.81 : 3,636.11 = 1,687.60 : x
  2. Step 2: Convert to fraction form
    2,422.81/3,636.11 = 1,687.60/x
  3. Step 3: Cross multiply
    2,422.81x = 3,636.11 × 1,687.60
  4. Step 4: Simplify right side
    2,422.81x = 6,136,299.24
  5. Step 5: Solve for x
    x = 6,136,299.24/2,422.81
  6. Step 6: Final answer
    x = 2,532.72

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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.