Home / 3,490.78-5,233.20-2,763.70

Finding the Fourth Proportional to 3,490.78, 5,233.20 and 2,763.70

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Solution

The fourth proportional to 3,490.78, 5,233.20 and 2,763.70 is: 4,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.78 : 5,233.20 = 2,763.70 : x
  2. Step 2: Convert to fraction form
    3,490.78/5,233.20 = 2,763.70/x
  3. Step 3: Cross multiply
    3,490.78x = 5,233.20 × 2,763.70
  4. Step 4: Simplify right side
    3,490.78x = 14,462,994.84
  5. Step 5: Solve for x
    x = 14,462,994.84/3,490.78
  6. Step 6: Final answer
    x = 4,143.20

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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.