Home / 3,389.62-5,086.84-1,931.62

Finding the Fourth Proportional to 3,389.62, 5,086.84 and 1,931.62

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Solution

The fourth proportional to 3,389.62, 5,086.84 and 1,931.62 is: 2,898.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.62 : 5,086.84 = 1,931.62 : x
  2. Step 2: Convert to fraction form
    3,389.62/5,086.84 = 1,931.62/x
  3. Step 3: Cross multiply
    3,389.62x = 5,086.84 × 1,931.62
  4. Step 4: Simplify right side
    3,389.62x = 9,825,841.88
  5. Step 5: Solve for x
    x = 9,825,841.88/3,389.62
  6. Step 6: Final answer
    x = 2,898.80

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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.