Home / 7,818.69-11,721.54-3,656.52

Finding the Fourth Proportional to 7,818.69, 11,721.54 and 3,656.52

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Solution

The fourth proportional to 7,818.69, 11,721.54 and 3,656.52 is: 5,481.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.69 : 11,721.54 = 3,656.52 : x
  2. Step 2: Convert to fraction form
    7,818.69/11,721.54 = 3,656.52/x
  3. Step 3: Cross multiply
    7,818.69x = 11,721.54 × 3,656.52
  4. Step 4: Simplify right side
    7,818.69x = 42,860,045.44
  5. Step 5: Solve for x
    x = 42,860,045.44/7,818.69
  6. Step 6: Final answer
    x = 5,481.74

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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.