Home / 8,679.51-13,016.79-2,439.09

Finding the Fourth Proportional to 8,679.51, 13,016.79 and 2,439.09

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Solution

The fourth proportional to 8,679.51, 13,016.79 and 2,439.09 is: 3,657.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.51 : 13,016.79 = 2,439.09 : x
  2. Step 2: Convert to fraction form
    8,679.51/13,016.79 = 2,439.09/x
  3. Step 3: Cross multiply
    8,679.51x = 13,016.79 × 2,439.09
  4. Step 4: Simplify right side
    8,679.51x = 31,749,122.32
  5. Step 5: Solve for x
    x = 31,749,122.32/8,679.51
  6. Step 6: Final answer
    x = 3,657.94

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1.5x scale

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.