Home / 3,214.43-4,427.97-2,740.78

Finding the Fourth Proportional to 3,214.43, 4,427.97 and 2,740.78

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Solution

The fourth proportional to 3,214.43, 4,427.97 and 2,740.78 is: 3,775.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,214.43 : 4,427.97 = 2,740.78 : x
  2. Step 2: Convert to fraction form
    3,214.43/4,427.97 = 2,740.78/x
  3. Step 3: Cross multiply
    3,214.43x = 4,427.97 × 2,740.78
  4. Step 4: Simplify right side
    3,214.43x = 12,136,069.48
  5. Step 5: Solve for x
    x = 12,136,069.48/3,214.43
  6. Step 6: Final answer
    x = 3,775.50

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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.