Home / 2,454.20-3,680.78-810.36

Finding the Fourth Proportional to 2,454.20, 3,680.78 and 810.36

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Solution

The fourth proportional to 2,454.20, 3,680.78 and 810.36 is: 1,215.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,454.20 : 3,680.78 = 810.36 : x
  2. Step 2: Convert to fraction form
    2,454.20/3,680.78 = 810.36/x
  3. Step 3: Cross multiply
    2,454.20x = 3,680.78 × 810.36
  4. Step 4: Simplify right side
    2,454.20x = 2,982,752.83
  5. Step 5: Solve for x
    x = 2,982,752.83/2,454.20
  6. Step 6: Final answer
    x = 1,215.37

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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.