Home / 2,543.10-3,815.10-900.60

Finding the Fourth Proportional to 2,543.10, 3,815.10 and 900.60

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Solution

The fourth proportional to 2,543.10, 3,815.10 and 900.60 is: 1,351.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,543.10 : 3,815.10 = 900.60 : x
  2. Step 2: Convert to fraction form
    2,543.10/3,815.10 = 900.60/x
  3. Step 3: Cross multiply
    2,543.10x = 3,815.10 × 900.60
  4. Step 4: Simplify right side
    2,543.10x = 3,435,879.06
  5. Step 5: Solve for x
    x = 3,435,879.06/2,543.10
  6. Step 6: Final answer
    x = 1,351.06

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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.