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Finding the Fourth Proportional to 3,905.01, 5,386.50 and 2,412.38

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Solution

The fourth proportional to 3,905.01, 5,386.50 and 2,412.38 is: 3,327.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.01 : 5,386.50 = 2,412.38 : x
  2. Step 2: Convert to fraction form
    3,905.01/5,386.50 = 2,412.38/x
  3. Step 3: Cross multiply
    3,905.01x = 5,386.50 × 2,412.38
  4. Step 4: Simplify right side
    3,905.01x = 12,994,298.34
  5. Step 5: Solve for x
    x = 12,994,298.34/3,905.01
  6. Step 6: Final answer
    x = 3,327.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.