Home / 5,136.22-7,084.36-3,147.74

Finding the Fourth Proportional to 5,136.22, 7,084.36 and 3,147.74

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Solution

The fourth proportional to 5,136.22, 7,084.36 and 3,147.74 is: 4,341.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.22 : 7,084.36 = 3,147.74 : x
  2. Step 2: Convert to fraction form
    5,136.22/7,084.36 = 3,147.74/x
  3. Step 3: Cross multiply
    5,136.22x = 7,084.36 × 3,147.74
  4. Step 4: Simplify right side
    5,136.22x = 22,299,718.43
  5. Step 5: Solve for x
    x = 22,299,718.43/5,136.22
  6. Step 6: Final answer
    x = 4,341.66

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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.