Home / 7,815.91-11,725.19-2,885.57

Finding the Fourth Proportional to 7,815.91, 11,725.19 and 2,885.57

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Solution

The fourth proportional to 7,815.91, 11,725.19 and 2,885.57 is: 4,328.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.91 : 11,725.19 = 2,885.57 : x
  2. Step 2: Convert to fraction form
    7,815.91/11,725.19 = 2,885.57/x
  3. Step 3: Cross multiply
    7,815.91x = 11,725.19 × 2,885.57
  4. Step 4: Simplify right side
    7,815.91x = 33,833,893.04
  5. Step 5: Solve for x
    x = 33,833,893.04/7,815.91
  6. Step 6: Final answer
    x = 4,328.85

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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.