Home / 4,815.32-7,221.90-2,215.72

Finding the Fourth Proportional to 4,815.32, 7,221.90 and 2,215.72

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Solution

The fourth proportional to 4,815.32, 7,221.90 and 2,215.72 is: 3,323.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815.32 : 7,221.90 = 2,215.72 : x
  2. Step 2: Convert to fraction form
    4,815.32/7,221.90 = 2,215.72/x
  3. Step 3: Cross multiply
    4,815.32x = 7,221.90 × 2,215.72
  4. Step 4: Simplify right side
    4,815.32x = 16,001,708.27
  5. Step 5: Solve for x
    x = 16,001,708.27/4,815.32
  6. Step 6: Final answer
    x = 3,323.08

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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.