Home / 7,178.16-10,761.74-3,279.84

Finding the Fourth Proportional to 7,178.16, 10,761.74 and 3,279.84

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Solution

The fourth proportional to 7,178.16, 10,761.74 and 3,279.84 is: 4,917.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178.16 : 10,761.74 = 3,279.84 : x
  2. Step 2: Convert to fraction form
    7,178.16/10,761.74 = 3,279.84/x
  3. Step 3: Cross multiply
    7,178.16x = 10,761.74 × 3,279.84
  4. Step 4: Simplify right side
    7,178.16x = 35,296,785.32
  5. Step 5: Solve for x
    x = 35,296,785.32/7,178.16
  6. Step 6: Final answer
    x = 4,917.25

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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.