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Finding the Fourth Proportional to 3,868.41, 5,803.60 and 1,647.89

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Solution

The fourth proportional to 3,868.41, 5,803.60 and 1,647.89 is: 2,472.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.41 : 5,803.60 = 1,647.89 : x
  2. Step 2: Convert to fraction form
    3,868.41/5,803.60 = 1,647.89/x
  3. Step 3: Cross multiply
    3,868.41x = 5,803.60 × 1,647.89
  4. Step 4: Simplify right side
    3,868.41x = 9,563,718.76
  5. Step 5: Solve for x
    x = 9,563,718.76/3,868.41
  6. Step 6: Final answer
    x = 2,472.26

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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.