Home / 3,423.08-5,128.54-2,122.60

Finding the Fourth Proportional to 3,423.08, 5,128.54 and 2,122.60

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Solution

The fourth proportional to 3,423.08, 5,128.54 and 2,122.60 is: 3,180.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.08 : 5,128.54 = 2,122.60 : x
  2. Step 2: Convert to fraction form
    3,423.08/5,128.54 = 2,122.60/x
  3. Step 3: Cross multiply
    3,423.08x = 5,128.54 × 2,122.60
  4. Step 4: Simplify right side
    3,423.08x = 10,885,839.00
  5. Step 5: Solve for x
    x = 10,885,839.00/3,423.08
  6. Step 6: Final answer
    x = 3,180.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.