Home / 8,010.72-12,012.70-2,815.40

Finding the Fourth Proportional to 8,010.72, 12,012.70 and 2,815.40

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Solution

The fourth proportional to 8,010.72, 12,012.70 and 2,815.40 is: 4,221.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,010.72 : 12,012.70 = 2,815.40 : x
  2. Step 2: Convert to fraction form
    8,010.72/12,012.70 = 2,815.40/x
  3. Step 3: Cross multiply
    8,010.72x = 12,012.70 × 2,815.40
  4. Step 4: Simplify right side
    8,010.72x = 33,820,555.58
  5. Step 5: Solve for x
    x = 33,820,555.58/8,010.72
  6. Step 6: Final answer
    x = 4,221.91

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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.