Home / 5,118.40-7,693.80-4,729.60

Finding the Fourth Proportional to 5,118.40, 7,693.80 and 4,729.60

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Solution

The fourth proportional to 5,118.40, 7,693.80 and 4,729.60 is: 7,109.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.40 : 7,693.80 = 4,729.60 : x
  2. Step 2: Convert to fraction form
    5,118.40/7,693.80 = 4,729.60/x
  3. Step 3: Cross multiply
    5,118.40x = 7,693.80 × 4,729.60
  4. Step 4: Simplify right side
    5,118.40x = 36,388,596.48
  5. Step 5: Solve for x
    x = 36,388,596.48/5,118.40
  6. Step 6: Final answer
    x = 7,109.37

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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.