Home / 8,690.92-13,030.62-3,143.53

Finding the Fourth Proportional to 8,690.92, 13,030.62 and 3,143.53

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Solution

The fourth proportional to 8,690.92, 13,030.62 and 3,143.53 is: 4,713.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.92 : 13,030.62 = 3,143.53 : x
  2. Step 2: Convert to fraction form
    8,690.92/13,030.62 = 3,143.53/x
  3. Step 3: Cross multiply
    8,690.92x = 13,030.62 × 3,143.53
  4. Step 4: Simplify right side
    8,690.92x = 40,962,203.72
  5. Step 5: Solve for x
    x = 40,962,203.72/8,690.92
  6. Step 6: Final answer
    x = 4,713.22

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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.