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Finding the Fourth Proportional to 2,653.37, 3,978.70 and 1,008.66

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Solution

The fourth proportional to 2,653.37, 3,978.70 and 1,008.66 is: 1,512.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,653.37 : 3,978.70 = 1,008.66 : x
  2. Step 2: Convert to fraction form
    2,653.37/3,978.70 = 1,008.66/x
  3. Step 3: Cross multiply
    2,653.37x = 3,978.70 × 1,008.66
  4. Step 4: Simplify right side
    2,653.37x = 4,013,153.02
  5. Step 5: Solve for x
    x = 4,013,153.02/2,653.37
  6. Step 6: Final answer
    x = 1,512.48

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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.