Home / 8,279.89-11,425.64-4,694.92

Finding the Fourth Proportional to 8,279.89, 11,425.64 and 4,694.92

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Solution

The fourth proportional to 8,279.89, 11,425.64 and 4,694.92 is: 6,478.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.89 : 11,425.64 = 4,694.92 : x
  2. Step 2: Convert to fraction form
    8,279.89/11,425.64 = 4,694.92/x
  3. Step 3: Cross multiply
    8,279.89x = 11,425.64 × 4,694.92
  4. Step 4: Simplify right side
    8,279.89x = 53,642,465.75
  5. Step 5: Solve for x
    x = 53,642,465.75/8,279.89
  6. Step 6: Final answer
    x = 6,478.64

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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.