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Finding the Fourth Proportional to 4,739.43, 7,109.14 and 2,106.32

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Solution

The fourth proportional to 4,739.43, 7,109.14 and 2,106.32 is: 3,159.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,739.43 : 7,109.14 = 2,106.32 : x
  2. Step 2: Convert to fraction form
    4,739.43/7,109.14 = 2,106.32/x
  3. Step 3: Cross multiply
    4,739.43x = 7,109.14 × 2,106.32
  4. Step 4: Simplify right side
    4,739.43x = 14,974,141.54
  5. Step 5: Solve for x
    x = 14,974,141.54/4,739.43
  6. Step 6: Final answer
    x = 3,159.48

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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.