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Finding the Fourth Proportional to 5,266.79, 7,900.18 and 1,371.09

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Solution

The fourth proportional to 5,266.79, 7,900.18 and 1,371.09 is: 2,056.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,266.79 : 7,900.18 = 1,371.09 : x
  2. Step 2: Convert to fraction form
    5,266.79/7,900.18 = 1,371.09/x
  3. Step 3: Cross multiply
    5,266.79x = 7,900.18 × 1,371.09
  4. Step 4: Simplify right side
    5,266.79x = 10,831,857.80
  5. Step 5: Solve for x
    x = 10,831,857.80/5,266.79
  6. Step 6: Final answer
    x = 2,056.63

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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.