Home / 3,213.88-4,421.28-2,623.12

Finding the Fourth Proportional to 3,213.88, 4,421.28 and 2,623.12

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Solution

The fourth proportional to 3,213.88, 4,421.28 and 2,623.12 is: 3,608.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,213.88 : 4,421.28 = 2,623.12 : x
  2. Step 2: Convert to fraction form
    3,213.88/4,421.28 = 2,623.12/x
  3. Step 3: Cross multiply
    3,213.88x = 4,421.28 × 2,623.12
  4. Step 4: Simplify right side
    3,213.88x = 11,597,547.99
  5. Step 5: Solve for x
    x = 11,597,547.99/3,213.88
  6. Step 6: Final answer
    x = 3,608.58

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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.