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Finding the Fourth Proportional to 4,938.92, 7,406.18 and 1,858.76

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Solution

The fourth proportional to 4,938.92, 7,406.18 and 1,858.76 is: 2,787.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,938.92 : 7,406.18 = 1,858.76 : x
  2. Step 2: Convert to fraction form
    4,938.92/7,406.18 = 1,858.76/x
  3. Step 3: Cross multiply
    4,938.92x = 7,406.18 × 1,858.76
  4. Step 4: Simplify right side
    4,938.92x = 13,766,311.14
  5. Step 5: Solve for x
    x = 13,766,311.14/4,938.92
  6. Step 6: Final answer
    x = 2,787.31

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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.