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Finding the Fourth Proportional to 4,978.79, 7,468.19 and 2,053.88

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Solution

The fourth proportional to 4,978.79, 7,468.19 and 2,053.88 is: 3,080.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978.79 : 7,468.19 = 2,053.88 : x
  2. Step 2: Convert to fraction form
    4,978.79/7,468.19 = 2,053.88/x
  3. Step 3: Cross multiply
    4,978.79x = 7,468.19 × 2,053.88
  4. Step 4: Simplify right side
    4,978.79x = 15,338,789.88
  5. Step 5: Solve for x
    x = 15,338,789.88/4,978.79
  6. Step 6: Final answer
    x = 3,080.83

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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.