Home / 2,220.12-3,328.56-758.88

Finding the Fourth Proportional to 2,220.12, 3,328.56 and 758.88

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Solution

The fourth proportional to 2,220.12, 3,328.56 and 758.88 is: 1,137.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.12 : 3,328.56 = 758.88 : x
  2. Step 2: Convert to fraction form
    2,220.12/3,328.56 = 758.88/x
  3. Step 3: Cross multiply
    2,220.12x = 3,328.56 × 758.88
  4. Step 4: Simplify right side
    2,220.12x = 2,525,977.61
  5. Step 5: Solve for x
    x = 2,525,977.61/2,220.12
  6. Step 6: Final answer
    x = 1,137.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.