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Finding the Fourth Proportional to 2,652.34, 3,978.50 and 651.04

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Solution

The fourth proportional to 2,652.34, 3,978.50 and 651.04 is: 976.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,652.34 : 3,978.50 = 651.04 : x
  2. Step 2: Convert to fraction form
    2,652.34/3,978.50 = 651.04/x
  3. Step 3: Cross multiply
    2,652.34x = 3,978.50 × 651.04
  4. Step 4: Simplify right side
    2,652.34x = 2,590,162.64
  5. Step 5: Solve for x
    x = 2,590,162.64/2,652.34
  6. Step 6: Final answer
    x = 976.56

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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.