Home / 4,978.98-6,871.04-2,740.79

Finding the Fourth Proportional to 4,978.98, 6,871.04 and 2,740.79

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Solution

The fourth proportional to 4,978.98, 6,871.04 and 2,740.79 is: 3,782.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,978.98 : 6,871.04 = 2,740.79 : x
  2. Step 2: Convert to fraction form
    4,978.98/6,871.04 = 2,740.79/x
  3. Step 3: Cross multiply
    4,978.98x = 6,871.04 × 2,740.79
  4. Step 4: Simplify right side
    4,978.98x = 18,832,029.66
  5. Step 5: Solve for x
    x = 18,832,029.66/4,978.98
  6. Step 6: Final answer
    x = 3,782.31

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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.