Home / 7,878.72-11,817.26-2,613.54

Finding the Fourth Proportional to 7,878.72, 11,817.26 and 2,613.54

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Solution

The fourth proportional to 7,878.72, 11,817.26 and 2,613.54 is: 3,920.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.72 : 11,817.26 = 2,613.54 : x
  2. Step 2: Convert to fraction form
    7,878.72/11,817.26 = 2,613.54/x
  3. Step 3: Cross multiply
    7,878.72x = 11,817.26 × 2,613.54
  4. Step 4: Simplify right side
    7,878.72x = 30,884,881.70
  5. Step 5: Solve for x
    x = 30,884,881.70/7,878.72
  6. Step 6: Final answer
    x = 3,920.04

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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.