Home / 3,421.68-4,721.66-2,005.20

Finding the Fourth Proportional to 3,421.68, 4,721.66 and 2,005.20

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Solution

The fourth proportional to 3,421.68, 4,721.66 and 2,005.20 is: 2,767.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.68 : 4,721.66 = 2,005.20 : x
  2. Step 2: Convert to fraction form
    3,421.68/4,721.66 = 2,005.20/x
  3. Step 3: Cross multiply
    3,421.68x = 4,721.66 × 2,005.20
  4. Step 4: Simplify right side
    3,421.68x = 9,467,872.63
  5. Step 5: Solve for x
    x = 9,467,872.63/3,421.68
  6. Step 6: Final answer
    x = 2,767.02

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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.