Home / 4,218.12-5,819.22-2,821.32

Finding the Fourth Proportional to 4,218.12, 5,819.22 and 2,821.32

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Solution

The fourth proportional to 4,218.12, 5,819.22 and 2,821.32 is: 3,892.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,218.12 : 5,819.22 = 2,821.32 : x
  2. Step 2: Convert to fraction form
    4,218.12/5,819.22 = 2,821.32/x
  3. Step 3: Cross multiply
    4,218.12x = 5,819.22 × 2,821.32
  4. Step 4: Simplify right side
    4,218.12x = 16,417,881.77
  5. Step 5: Solve for x
    x = 16,417,881.77/4,218.12
  6. Step 6: Final answer
    x = 3,892.23

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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.