Home / 5,056.72-6,978.31-2,818.74

Finding the Fourth Proportional to 5,056.72, 6,978.31 and 2,818.74

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Solution

The fourth proportional to 5,056.72, 6,978.31 and 2,818.74 is: 3,889.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,056.72 : 6,978.31 = 2,818.74 : x
  2. Step 2: Convert to fraction form
    5,056.72/6,978.31 = 2,818.74/x
  3. Step 3: Cross multiply
    5,056.72x = 6,978.31 × 2,818.74
  4. Step 4: Simplify right side
    5,056.72x = 19,670,027.44
  5. Step 5: Solve for x
    x = 19,670,027.44/5,056.72
  6. Step 6: Final answer
    x = 3,889.88

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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.