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Finding the Fourth Proportional to 3,097.18, 4,645.92 and 905.93

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Solution

The fourth proportional to 3,097.18, 4,645.92 and 905.93 is: 1,358.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,097.18 : 4,645.92 = 905.93 : x
  2. Step 2: Convert to fraction form
    3,097.18/4,645.92 = 905.93/x
  3. Step 3: Cross multiply
    3,097.18x = 4,645.92 × 905.93
  4. Step 4: Simplify right side
    3,097.18x = 4,208,875.90
  5. Step 5: Solve for x
    x = 4,208,875.90/3,097.18
  6. Step 6: Final answer
    x = 1,358.94

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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.