Home / 3,212.48-4,429.76-2,219.20

Finding the Fourth Proportional to 3,212.48, 4,429.76 and 2,219.20

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Solution

The fourth proportional to 3,212.48, 4,429.76 and 2,219.20 is: 3,060.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.48 : 4,429.76 = 2,219.20 : x
  2. Step 2: Convert to fraction form
    3,212.48/4,429.76 = 2,219.20/x
  3. Step 3: Cross multiply
    3,212.48x = 4,429.76 × 2,219.20
  4. Step 4: Simplify right side
    3,212.48x = 9,830,523.39
  5. Step 5: Solve for x
    x = 9,830,523.39/3,212.48
  6. Step 6: Final answer
    x = 3,060.10

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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.