Home / 3,270.78-4,513.12-2,153.59

Finding the Fourth Proportional to 3,270.78, 4,513.12 and 2,153.59

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Solution

The fourth proportional to 3,270.78, 4,513.12 and 2,153.59 is: 2,971.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,270.78 : 4,513.12 = 2,153.59 : x
  2. Step 2: Convert to fraction form
    3,270.78/4,513.12 = 2,153.59/x
  3. Step 3: Cross multiply
    3,270.78x = 4,513.12 × 2,153.59
  4. Step 4: Simplify right side
    3,270.78x = 9,719,393.43
  5. Step 5: Solve for x
    x = 9,719,393.43/3,270.78
  6. Step 6: Final answer
    x = 2,971.58

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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.