Home / 2,900.13-4,350.93-820.14

Finding the Fourth Proportional to 2,900.13, 4,350.93 and 820.14

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Solution

The fourth proportional to 2,900.13, 4,350.93 and 820.14 is: 1,230.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.13 : 4,350.93 = 820.14 : x
  2. Step 2: Convert to fraction form
    2,900.13/4,350.93 = 820.14/x
  3. Step 3: Cross multiply
    2,900.13x = 4,350.93 × 820.14
  4. Step 4: Simplify right side
    2,900.13x = 3,568,371.73
  5. Step 5: Solve for x
    x = 3,568,371.73/2,900.13
  6. Step 6: Final answer
    x = 1,230.42

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1.5x scale

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.