Home / 4,279.32-6,427.49-2,639.07

Finding the Fourth Proportional to 4,279.32, 6,427.49 and 2,639.07

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Solution

The fourth proportional to 4,279.32, 6,427.49 and 2,639.07 is: 3,963.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.32 : 6,427.49 = 2,639.07 : x
  2. Step 2: Convert to fraction form
    4,279.32/6,427.49 = 2,639.07/x
  3. Step 3: Cross multiply
    4,279.32x = 6,427.49 × 2,639.07
  4. Step 4: Simplify right side
    4,279.32x = 16,962,582.84
  5. Step 5: Solve for x
    x = 16,962,582.84/4,279.32
  6. Step 6: Final answer
    x = 3,963.85

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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.