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Finding the Fourth Proportional to 4,881.02, 7,309 and 2,687.30

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Solution

The fourth proportional to 4,881.02, 7,309 and 2,687.30 is: 4,024.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,881.02 : 7,309 = 2,687.30 : x
  2. Step 2: Convert to fraction form
    4,881.02/7,309 = 2,687.30/x
  3. Step 3: Cross multiply
    4,881.02x = 7,309 × 2,687.30
  4. Step 4: Simplify right side
    4,881.02x = 19,641,475.70
  5. Step 5: Solve for x
    x = 19,641,475.70/4,881.02
  6. Step 6: Final answer
    x = 4,024.05

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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.