Home / 3,390.54-5,086.58-1,310.55

Finding the Fourth Proportional to 3,390.54, 5,086.58 and 1,310.55

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Solution

The fourth proportional to 3,390.54, 5,086.58 and 1,310.55 is: 1,966.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.54 : 5,086.58 = 1,310.55 : x
  2. Step 2: Convert to fraction form
    3,390.54/5,086.58 = 1,310.55/x
  3. Step 3: Cross multiply
    3,390.54x = 5,086.58 × 1,310.55
  4. Step 4: Simplify right side
    3,390.54x = 6,666,217.42
  5. Step 5: Solve for x
    x = 6,666,217.42/3,390.54
  6. Step 6: Final answer
    x = 1,966.12

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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.