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Finding the Fourth Proportional to 4,879, 6,721.14 and 3,698.92

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Solution

The fourth proportional to 4,879, 6,721.14 and 3,698.92 is: 5,095.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879 : 6,721.14 = 3,698.92 : x
  2. Step 2: Convert to fraction form
    4,879/6,721.14 = 3,698.92/x
  3. Step 3: Cross multiply
    4,879x = 6,721.14 × 3,698.92
  4. Step 4: Simplify right side
    4,879x = 24,860,959.17
  5. Step 5: Solve for x
    x = 24,860,959.17/4,879
  6. Step 6: Final answer
    x = 5,095.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.