Home / 7,279.40-10,923.15-3,118.70

Finding the Fourth Proportional to 7,279.40, 10,923.15 and 3,118.70

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Solution

The fourth proportional to 7,279.40, 10,923.15 and 3,118.70 is: 4,679.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.40 : 10,923.15 = 3,118.70 : x
  2. Step 2: Convert to fraction form
    7,279.40/10,923.15 = 3,118.70/x
  3. Step 3: Cross multiply
    7,279.40x = 10,923.15 × 3,118.70
  4. Step 4: Simplify right side
    7,279.40x = 34,066,027.91
  5. Step 5: Solve for x
    x = 34,066,027.91/7,279.40
  6. Step 6: Final answer
    x = 4,679.79

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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.