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Finding the Fourth Proportional to 4,442.02, 6,664.71 and 1,978.66

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Solution

The fourth proportional to 4,442.02, 6,664.71 and 1,978.66 is: 2,968.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,442.02 : 6,664.71 = 1,978.66 : x
  2. Step 2: Convert to fraction form
    4,442.02/6,664.71 = 1,978.66/x
  3. Step 3: Cross multiply
    4,442.02x = 6,664.71 × 1,978.66
  4. Step 4: Simplify right side
    4,442.02x = 13,187,195.09
  5. Step 5: Solve for x
    x = 13,187,195.09/4,442.02
  6. Step 6: Final answer
    x = 2,968.74

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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.