Home / 4,891.20-7,342.20-2,698.80

Finding the Fourth Proportional to 4,891.20, 7,342.20 and 2,698.80

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Solution

The fourth proportional to 4,891.20, 7,342.20 and 2,698.80 is: 4,051.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,891.20 : 7,342.20 = 2,698.80 : x
  2. Step 2: Convert to fraction form
    4,891.20/7,342.20 = 2,698.80/x
  3. Step 3: Cross multiply
    4,891.20x = 7,342.20 × 2,698.80
  4. Step 4: Simplify right side
    4,891.20x = 19,815,129.36
  5. Step 5: Solve for x
    x = 19,815,129.36/4,891.20
  6. Step 6: Final answer
    x = 4,051.18

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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.