Home / 2,148.12-3,223.80-1,720.44

Finding the Fourth Proportional to 2,148.12, 3,223.80 and 1,720.44

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Solution

The fourth proportional to 2,148.12, 3,223.80 and 1,720.44 is: 2,581.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.12 : 3,223.80 = 1,720.44 : x
  2. Step 2: Convert to fraction form
    2,148.12/3,223.80 = 1,720.44/x
  3. Step 3: Cross multiply
    2,148.12x = 3,223.80 × 1,720.44
  4. Step 4: Simplify right side
    2,148.12x = 5,546,354.47
  5. Step 5: Solve for x
    x = 5,546,354.47/2,148.12
  6. Step 6: Final answer
    x = 2,581.96

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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.