Home / 1,376.28-1,900.20-984.44

Finding the Fourth Proportional to 1,376.28, 1,900.20 and 984.44

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Solution

The fourth proportional to 1,376.28, 1,900.20 and 984.44 is: 1,359.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,376.28 : 1,900.20 = 984.44 : x
  2. Step 2: Convert to fraction form
    1,376.28/1,900.20 = 984.44/x
  3. Step 3: Cross multiply
    1,376.28x = 1,900.20 × 984.44
  4. Step 4: Simplify right side
    1,376.28x = 1,870,623.39
  5. Step 5: Solve for x
    x = 1,870,623.39/1,376.28
  6. Step 6: Final answer
    x = 1,359.19

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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.