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Finding the Fourth Proportional to 2,978.61, 4,110.77 and 1,799.66

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Solution

The fourth proportional to 2,978.61, 4,110.77 and 1,799.66 is: 2,483.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,978.61 : 4,110.77 = 1,799.66 : x
  2. Step 2: Convert to fraction form
    2,978.61/4,110.77 = 1,799.66/x
  3. Step 3: Cross multiply
    2,978.61x = 4,110.77 × 1,799.66
  4. Step 4: Simplify right side
    2,978.61x = 7,397,958.79
  5. Step 5: Solve for x
    x = 7,397,958.79/2,978.61
  6. Step 6: Final answer
    x = 2,483.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.