Home / 2,087.60-3,136.94-1,265.99

Finding the Fourth Proportional to 2,087.60, 3,136.94 and 1,265.99

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Solution

The fourth proportional to 2,087.60, 3,136.94 and 1,265.99 is: 1,902.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.60 : 3,136.94 = 1,265.99 : x
  2. Step 2: Convert to fraction form
    2,087.60/3,136.94 = 1,265.99/x
  3. Step 3: Cross multiply
    2,087.60x = 3,136.94 × 1,265.99
  4. Step 4: Simplify right side
    2,087.60x = 3,971,328.34
  5. Step 5: Solve for x
    x = 3,971,328.34/2,087.60
  6. Step 6: Final answer
    x = 1,902.34

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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.