Home / 7,800.86-11,706.04-4,105.72

Finding the Fourth Proportional to 7,800.86, 11,706.04 and 4,105.72

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Solution

The fourth proportional to 7,800.86, 11,706.04 and 4,105.72 is: 6,161.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,800.86 : 11,706.04 = 4,105.72 : x
  2. Step 2: Convert to fraction form
    7,800.86/11,706.04 = 4,105.72/x
  3. Step 3: Cross multiply
    7,800.86x = 11,706.04 × 4,105.72
  4. Step 4: Simplify right side
    7,800.86x = 48,061,722.55
  5. Step 5: Solve for x
    x = 48,061,722.55/7,800.86
  6. Step 6: Final answer
    x = 6,161.08

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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.