Home / 2,279.92-3,423.12-2,160.40

Finding the Fourth Proportional to 2,279.92, 3,423.12 and 2,160.40

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Solution

The fourth proportional to 2,279.92, 3,423.12 and 2,160.40 is: 3,243.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.92 : 3,423.12 = 2,160.40 : x
  2. Step 2: Convert to fraction form
    2,279.92/3,423.12 = 2,160.40/x
  3. Step 3: Cross multiply
    2,279.92x = 3,423.12 × 2,160.40
  4. Step 4: Simplify right side
    2,279.92x = 7,395,308.45
  5. Step 5: Solve for x
    x = 7,395,308.45/2,279.92
  6. Step 6: Final answer
    x = 3,243.67

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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.