Home / 3,721.68-5,136.33-2,378.53

Finding the Fourth Proportional to 3,721.68, 5,136.33 and 2,378.53

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Solution

The fourth proportional to 3,721.68, 5,136.33 and 2,378.53 is: 3,282.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.68 : 5,136.33 = 2,378.53 : x
  2. Step 2: Convert to fraction form
    3,721.68/5,136.33 = 2,378.53/x
  3. Step 3: Cross multiply
    3,721.68x = 5,136.33 × 2,378.53
  4. Step 4: Simplify right side
    3,721.68x = 12,216,914.99
  5. Step 5: Solve for x
    x = 12,216,914.99/3,721.68
  6. Step 6: Final answer
    x = 3,282.63

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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.