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Finding the Fourth Proportional to 3,005.08, 4,507.76 and 925.40

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Solution

The fourth proportional to 3,005.08, 4,507.76 and 925.40 is: 1,388.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.08 : 4,507.76 = 925.40 : x
  2. Step 2: Convert to fraction form
    3,005.08/4,507.76 = 925.40/x
  3. Step 3: Cross multiply
    3,005.08x = 4,507.76 × 925.40
  4. Step 4: Simplify right side
    3,005.08x = 4,171,481.10
  5. Step 5: Solve for x
    x = 4,171,481.10/3,005.08
  6. Step 6: Final answer
    x = 1,388.14

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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.