Home / 4,814.30-7,221.45-4,279.70

Finding the Fourth Proportional to 4,814.30, 7,221.45 and 4,279.70

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Solution

The fourth proportional to 4,814.30, 7,221.45 and 4,279.70 is: 6,419.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,814.30 : 7,221.45 = 4,279.70 : x
  2. Step 2: Convert to fraction form
    4,814.30/7,221.45 = 4,279.70/x
  3. Step 3: Cross multiply
    4,814.30x = 7,221.45 × 4,279.70
  4. Step 4: Simplify right side
    4,814.30x = 30,905,639.57
  5. Step 5: Solve for x
    x = 30,905,639.57/4,814.30
  6. Step 6: Final answer
    x = 6,419.55

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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.