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Finding the Fourth Proportional to 6,742, 10,113 and 2,125

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Solution

The fourth proportional to 6,742, 10,113 and 2,125 is: 3,187.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,742 : 10,113 = 2,125 : x
  2. Step 2: Convert to fraction form
    6,742/10,113 = 2,125/x
  3. Step 3: Cross multiply
    6,742x = 10,113 × 2,125
  4. Step 4: Simplify right side
    6,742x = 21,490,125
  5. Step 5: Solve for x
    x = 21,490,125/6,742
  6. Step 6: Final answer
    x = 3,187.50

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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.