Home / 5,180.60-7,764.40-4,080.64

Finding the Fourth Proportional to 5,180.60, 7,764.40 and 4,080.64

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Solution

The fourth proportional to 5,180.60, 7,764.40 and 4,080.64 is: 6,115.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.60 : 7,764.40 = 4,080.64 : x
  2. Step 2: Convert to fraction form
    5,180.60/7,764.40 = 4,080.64/x
  3. Step 3: Cross multiply
    5,180.60x = 7,764.40 × 4,080.64
  4. Step 4: Simplify right side
    5,180.60x = 31,683,721.22
  5. Step 5: Solve for x
    x = 31,683,721.22/5,180.60
  6. Step 6: Final answer
    x = 6,115.84

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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.