Home / 3,136.41-4,329.45-2,142.21

Finding the Fourth Proportional to 3,136.41, 4,329.45 and 2,142.21

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Solution

The fourth proportional to 3,136.41, 4,329.45 and 2,142.21 is: 2,957.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.41 : 4,329.45 = 2,142.21 : x
  2. Step 2: Convert to fraction form
    3,136.41/4,329.45 = 2,142.21/x
  3. Step 3: Cross multiply
    3,136.41x = 4,329.45 × 2,142.21
  4. Step 4: Simplify right side
    3,136.41x = 9,274,591.08
  5. Step 5: Solve for x
    x = 9,274,591.08/3,136.41
  6. Step 6: Final answer
    x = 2,957.07

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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.