Home / 3,311.55-4,569.80-1,819.39

Finding the Fourth Proportional to 3,311.55, 4,569.80 and 1,819.39

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Solution

The fourth proportional to 3,311.55, 4,569.80 and 1,819.39 is: 2,510.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.55 : 4,569.80 = 1,819.39 : x
  2. Step 2: Convert to fraction form
    3,311.55/4,569.80 = 1,819.39/x
  3. Step 3: Cross multiply
    3,311.55x = 4,569.80 × 1,819.39
  4. Step 4: Simplify right side
    3,311.55x = 8,314,248.42
  5. Step 5: Solve for x
    x = 8,314,248.42/3,311.55
  6. Step 6: Final answer
    x = 2,510.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.