Home / 8,690.39-13,040.46-3,148.37

Finding the Fourth Proportional to 8,690.39, 13,040.46 and 3,148.37

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Solution

The fourth proportional to 8,690.39, 13,040.46 and 3,148.37 is: 4,724.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.39 : 13,040.46 = 3,148.37 : x
  2. Step 2: Convert to fraction form
    8,690.39/13,040.46 = 3,148.37/x
  3. Step 3: Cross multiply
    8,690.39x = 13,040.46 × 3,148.37
  4. Step 4: Simplify right side
    8,690.39x = 41,056,127.85
  5. Step 5: Solve for x
    x = 41,056,127.85/8,690.39
  6. Step 6: Final answer
    x = 4,724.32

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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.