Home / 2,509.42-3,766.56-1,211.80

Finding the Fourth Proportional to 2,509.42, 3,766.56 and 1,211.80

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Solution

The fourth proportional to 2,509.42, 3,766.56 and 1,211.80 is: 1,818.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,509.42 : 3,766.56 = 1,211.80 : x
  2. Step 2: Convert to fraction form
    2,509.42/3,766.56 = 1,211.80/x
  3. Step 3: Cross multiply
    2,509.42x = 3,766.56 × 1,211.80
  4. Step 4: Simplify right side
    2,509.42x = 4,564,292.52
  5. Step 5: Solve for x
    x = 4,564,292.52/2,509.42
  6. Step 6: Final answer
    x = 1,818.87

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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.