Home / 2,220.23-3,063.84-1,275.99

Finding the Fourth Proportional to 2,220.23, 3,063.84 and 1,275.99

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Solution

The fourth proportional to 2,220.23, 3,063.84 and 1,275.99 is: 1,760.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.23 : 3,063.84 = 1,275.99 : x
  2. Step 2: Convert to fraction form
    2,220.23/3,063.84 = 1,275.99/x
  3. Step 3: Cross multiply
    2,220.23x = 3,063.84 × 1,275.99
  4. Step 4: Simplify right side
    2,220.23x = 3,909,429.20
  5. Step 5: Solve for x
    x = 3,909,429.20/2,220.23
  6. Step 6: Final answer
    x = 1,760.83

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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.