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Finding the Fourth Proportional to 4,921.31, 7,385.21 and 2,324.51

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Solution

The fourth proportional to 4,921.31, 7,385.21 and 2,324.51 is: 3,488.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.31 : 7,385.21 = 2,324.51 : x
  2. Step 2: Convert to fraction form
    4,921.31/7,385.21 = 2,324.51/x
  3. Step 3: Cross multiply
    4,921.31x = 7,385.21 × 2,324.51
  4. Step 4: Simplify right side
    4,921.31x = 17,166,994.50
  5. Step 5: Solve for x
    x = 17,166,994.50/4,921.31
  6. Step 6: Final answer
    x = 3,488.30

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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.