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Finding the Fourth Proportional to 2,555.40, 3,830.52 and 994.44

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Solution

The fourth proportional to 2,555.40, 3,830.52 and 994.44 is: 1,490.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,555.40 : 3,830.52 = 994.44 : x
  2. Step 2: Convert to fraction form
    2,555.40/3,830.52 = 994.44/x
  3. Step 3: Cross multiply
    2,555.40x = 3,830.52 × 994.44
  4. Step 4: Simplify right side
    2,555.40x = 3,809,222.31
  5. Step 5: Solve for x
    x = 3,809,222.31/2,555.40
  6. Step 6: Final answer
    x = 1,490.66

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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.