Home / 2,989.38-4,120.86-2,325.06

Finding the Fourth Proportional to 2,989.38, 4,120.86 and 2,325.06

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Solution

The fourth proportional to 2,989.38, 4,120.86 and 2,325.06 is: 3,205.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.38 : 4,120.86 = 2,325.06 : x
  2. Step 2: Convert to fraction form
    2,989.38/4,120.86 = 2,325.06/x
  3. Step 3: Cross multiply
    2,989.38x = 4,120.86 × 2,325.06
  4. Step 4: Simplify right side
    2,989.38x = 9,581,246.75
  5. Step 5: Solve for x
    x = 9,581,246.75/2,989.38
  6. Step 6: Final answer
    x = 3,205.09

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1.5x scale

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.