Home / 2,900.22-4,002.30-1,721.40

Finding the Fourth Proportional to 2,900.22, 4,002.30 and 1,721.40

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Solution

The fourth proportional to 2,900.22, 4,002.30 and 1,721.40 is: 2,375.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.22 : 4,002.30 = 1,721.40 : x
  2. Step 2: Convert to fraction form
    2,900.22/4,002.30 = 1,721.40/x
  3. Step 3: Cross multiply
    2,900.22x = 4,002.30 × 1,721.40
  4. Step 4: Simplify right side
    2,900.22x = 6,889,559.22
  5. Step 5: Solve for x
    x = 6,889,559.22/2,900.22
  6. Step 6: Final answer
    x = 2,375.53

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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.