Home / 2,822-4,230.80-1,521.68

Finding the Fourth Proportional to 2,822, 4,230.80 and 1,521.68

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Solution

The fourth proportional to 2,822, 4,230.80 and 1,521.68 is: 2,281.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822 : 4,230.80 = 1,521.68 : x
  2. Step 2: Convert to fraction form
    2,822/4,230.80 = 1,521.68/x
  3. Step 3: Cross multiply
    2,822x = 4,230.80 × 1,521.68
  4. Step 4: Simplify right side
    2,822x = 6,437,923.74
  5. Step 5: Solve for x
    x = 6,437,923.74/2,822
  6. Step 6: Final answer
    x = 2,281.33

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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.