Home / 8,781.56-13,157.44-5,311.52

Finding the Fourth Proportional to 8,781.56, 13,157.44 and 5,311.52

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Solution

The fourth proportional to 8,781.56, 13,157.44 and 5,311.52 is: 7,958.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.56 : 13,157.44 = 5,311.52 : x
  2. Step 2: Convert to fraction form
    8,781.56/13,157.44 = 5,311.52/x
  3. Step 3: Cross multiply
    8,781.56x = 13,157.44 × 5,311.52
  4. Step 4: Simplify right side
    8,781.56x = 69,886,005.71
  5. Step 5: Solve for x
    x = 69,886,005.71/8,781.56
  6. Step 6: Final answer
    x = 7,958.27

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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.