Home / 8,160.40-12,240.60-2,613.79

Finding the Fourth Proportional to 8,160.40, 12,240.60 and 2,613.79

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Solution

The fourth proportional to 8,160.40, 12,240.60 and 2,613.79 is: 3,920.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,160.40 : 12,240.60 = 2,613.79 : x
  2. Step 2: Convert to fraction form
    8,160.40/12,240.60 = 2,613.79/x
  3. Step 3: Cross multiply
    8,160.40x = 12,240.60 × 2,613.79
  4. Step 4: Simplify right side
    8,160.40x = 31,994,357.87
  5. Step 5: Solve for x
    x = 31,994,357.87/8,160.40
  6. Step 6: Final answer
    x = 3,920.69

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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.