Home / 2,442.20-3,656.40-1,900.70

Finding the Fourth Proportional to 2,442.20, 3,656.40 and 1,900.70

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Solution

The fourth proportional to 2,442.20, 3,656.40 and 1,900.70 is: 2,845.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,442.20 : 3,656.40 = 1,900.70 : x
  2. Step 2: Convert to fraction form
    2,442.20/3,656.40 = 1,900.70/x
  3. Step 3: Cross multiply
    2,442.20x = 3,656.40 × 1,900.70
  4. Step 4: Simplify right side
    2,442.20x = 6,949,719.48
  5. Step 5: Solve for x
    x = 6,949,719.48/2,442.20
  6. Step 6: Final answer
    x = 2,845.68

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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.