Home / 2,230.02-3,345.30-768.78

Finding the Fourth Proportional to 2,230.02, 3,345.30 and 768.78

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Solution

The fourth proportional to 2,230.02, 3,345.30 and 768.78 is: 1,153.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,230.02 : 3,345.30 = 768.78 : x
  2. Step 2: Convert to fraction form
    2,230.02/3,345.30 = 768.78/x
  3. Step 3: Cross multiply
    2,230.02x = 3,345.30 × 768.78
  4. Step 4: Simplify right side
    2,230.02x = 2,571,799.73
  5. Step 5: Solve for x
    x = 2,571,799.73/2,230.02
  6. Step 6: Final answer
    x = 1,153.26

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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.