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Finding the Fourth Proportional to 4,652.40, 6,978.48 and 1,142.44

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Solution

The fourth proportional to 4,652.40, 6,978.48 and 1,142.44 is: 1,713.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,652.40 : 6,978.48 = 1,142.44 : x
  2. Step 2: Convert to fraction form
    4,652.40/6,978.48 = 1,142.44/x
  3. Step 3: Cross multiply
    4,652.40x = 6,978.48 × 1,142.44
  4. Step 4: Simplify right side
    4,652.40x = 7,972,494.69
  5. Step 5: Solve for x
    x = 7,972,494.69/4,652.40
  6. Step 6: Final answer
    x = 1,713.63

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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.