Home / 3,815.75-5,265.40-2,136.62

Finding the Fourth Proportional to 3,815.75, 5,265.40 and 2,136.62

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Solution

The fourth proportional to 3,815.75, 5,265.40 and 2,136.62 is: 2,948.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.75 : 5,265.40 = 2,136.62 : x
  2. Step 2: Convert to fraction form
    3,815.75/5,265.40 = 2,136.62/x
  3. Step 3: Cross multiply
    3,815.75x = 5,265.40 × 2,136.62
  4. Step 4: Simplify right side
    3,815.75x = 11,250,158.95
  5. Step 5: Solve for x
    x = 11,250,158.95/3,815.75
  6. Step 6: Final answer
    x = 2,948.35

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1.5x scale

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.