Home / 8,693.12-13,039.62-2,119.16

Finding the Fourth Proportional to 8,693.12, 13,039.62 and 2,119.16

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Solution

The fourth proportional to 8,693.12, 13,039.62 and 2,119.16 is: 3,178.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,693.12 : 13,039.62 = 2,119.16 : x
  2. Step 2: Convert to fraction form
    8,693.12/13,039.62 = 2,119.16/x
  3. Step 3: Cross multiply
    8,693.12x = 13,039.62 × 2,119.16
  4. Step 4: Simplify right side
    8,693.12x = 27,633,041.12
  5. Step 5: Solve for x
    x = 27,633,041.12/8,693.12
  6. Step 6: Final answer
    x = 3,178.73

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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.