Home / 3,136.72-4,331.60-2,019.62

Finding the Fourth Proportional to 3,136.72, 4,331.60 and 2,019.62

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Solution

The fourth proportional to 3,136.72, 4,331.60 and 2,019.62 is: 2,788.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.72 : 4,331.60 = 2,019.62 : x
  2. Step 2: Convert to fraction form
    3,136.72/4,331.60 = 2,019.62/x
  3. Step 3: Cross multiply
    3,136.72x = 4,331.60 × 2,019.62
  4. Step 4: Simplify right side
    3,136.72x = 8,748,154.24
  5. Step 5: Solve for x
    x = 8,748,154.24/3,136.72
  6. Step 6: Final answer
    x = 2,788.95

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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.