Home / 1,366.80-2,048.64-819.37

Finding the Fourth Proportional to 1,366.80, 2,048.64 and 819.37

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Solution

The fourth proportional to 1,366.80, 2,048.64 and 819.37 is: 1,228.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,366.80 : 2,048.64 = 819.37 : x
  2. Step 2: Convert to fraction form
    1,366.80/2,048.64 = 819.37/x
  3. Step 3: Cross multiply
    1,366.80x = 2,048.64 × 819.37
  4. Step 4: Simplify right side
    1,366.80x = 1,678,594.16
  5. Step 5: Solve for x
    x = 1,678,594.16/1,366.80
  6. Step 6: Final answer
    x = 1,228.12

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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.