Home / 8,981.64-13,474.62-3,138.12

Finding the Fourth Proportional to 8,981.64, 13,474.62 and 3,138.12

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Solution

The fourth proportional to 8,981.64, 13,474.62 and 3,138.12 is: 4,707.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.64 : 13,474.62 = 3,138.12 : x
  2. Step 2: Convert to fraction form
    8,981.64/13,474.62 = 3,138.12/x
  3. Step 3: Cross multiply
    8,981.64x = 13,474.62 × 3,138.12
  4. Step 4: Simplify right side
    8,981.64x = 42,284,974.51
  5. Step 5: Solve for x
    x = 42,284,974.51/8,981.64
  6. Step 6: Final answer
    x = 4,707.93

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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.