Home / 3,421.12-4,721.28-2,241.28

Finding the Fourth Proportional to 3,421.12, 4,721.28 and 2,241.28

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Solution

The fourth proportional to 3,421.12, 4,721.28 and 2,241.28 is: 3,093.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.12 : 4,721.28 = 2,241.28 : x
  2. Step 2: Convert to fraction form
    3,421.12/4,721.28 = 2,241.28/x
  3. Step 3: Cross multiply
    3,421.12x = 4,721.28 × 2,241.28
  4. Step 4: Simplify right side
    3,421.12x = 10,581,710.44
  5. Step 5: Solve for x
    x = 10,581,710.44/3,421.12
  6. Step 6: Final answer
    x = 3,093.05

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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.