Home / 7,818.61-11,721.46-3,656.57

Finding the Fourth Proportional to 7,818.61, 11,721.46 and 3,656.57

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Solution

The fourth proportional to 7,818.61, 11,721.46 and 3,656.57 is: 5,481.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.61 : 11,721.46 = 3,656.57 : x
  2. Step 2: Convert to fraction form
    7,818.61/11,721.46 = 3,656.57/x
  3. Step 3: Cross multiply
    7,818.61x = 11,721.46 × 3,656.57
  4. Step 4: Simplify right side
    7,818.61x = 42,860,320.71
  5. Step 5: Solve for x
    x = 42,860,320.71/7,818.61
  6. Step 6: Final answer
    x = 5,481.83

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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.