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Finding the Fourth Proportional to 2,486.81, 3,730.19 and 926.76

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Solution

The fourth proportional to 2,486.81, 3,730.19 and 926.76 is: 1,390.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.81 : 3,730.19 = 926.76 : x
  2. Step 2: Convert to fraction form
    2,486.81/3,730.19 = 926.76/x
  3. Step 3: Cross multiply
    2,486.81x = 3,730.19 × 926.76
  4. Step 4: Simplify right side
    2,486.81x = 3,456,969.92
  5. Step 5: Solve for x
    x = 3,456,969.92/2,486.81
  6. Step 6: Final answer
    x = 1,390.13

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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.