Home / 4,279.84-5,905.68-2,391.20

Finding the Fourth Proportional to 4,279.84, 5,905.68 and 2,391.20

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Solution

The fourth proportional to 4,279.84, 5,905.68 and 2,391.20 is: 3,299.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.84 : 5,905.68 = 2,391.20 : x
  2. Step 2: Convert to fraction form
    4,279.84/5,905.68 = 2,391.20/x
  3. Step 3: Cross multiply
    4,279.84x = 5,905.68 × 2,391.20
  4. Step 4: Simplify right side
    4,279.84x = 14,121,662.02
  5. Step 5: Solve for x
    x = 14,121,662.02/4,279.84
  6. Step 6: Final answer
    x = 3,299.58

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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.