Home / 2,926.80-4,390.20-2,103.30

Finding the Fourth Proportional to 2,926.80, 4,390.20 and 2,103.30

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Solution

The fourth proportional to 2,926.80, 4,390.20 and 2,103.30 is: 3,154.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,926.80 : 4,390.20 = 2,103.30 : x
  2. Step 2: Convert to fraction form
    2,926.80/4,390.20 = 2,103.30/x
  3. Step 3: Cross multiply
    2,926.80x = 4,390.20 × 2,103.30
  4. Step 4: Simplify right side
    2,926.80x = 9,233,907.66
  5. Step 5: Solve for x
    x = 9,233,907.66/2,926.80
  6. Step 6: Final answer
    x = 3,154.95

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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.