Home / 2,378.87-3,282.56-1,384.09

Finding the Fourth Proportional to 2,378.87, 3,282.56 and 1,384.09

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Solution

The fourth proportional to 2,378.87, 3,282.56 and 1,384.09 is: 1,909.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.87 : 3,282.56 = 1,384.09 : x
  2. Step 2: Convert to fraction form
    2,378.87/3,282.56 = 1,384.09/x
  3. Step 3: Cross multiply
    2,378.87x = 3,282.56 × 1,384.09
  4. Step 4: Simplify right side
    2,378.87x = 4,543,348.53
  5. Step 5: Solve for x
    x = 4,543,348.53/2,378.87
  6. Step 6: Final answer
    x = 1,909.88

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1.5x scale

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.