Home / 8,917.56-13,376.43-3,987.45

Finding the Fourth Proportional to 8,917.56, 13,376.43 and 3,987.45

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Solution

The fourth proportional to 8,917.56, 13,376.43 and 3,987.45 is: 5,981.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.56 : 13,376.43 = 3,987.45 : x
  2. Step 2: Convert to fraction form
    8,917.56/13,376.43 = 3,987.45/x
  3. Step 3: Cross multiply
    8,917.56x = 13,376.43 × 3,987.45
  4. Step 4: Simplify right side
    8,917.56x = 53,337,845.80
  5. Step 5: Solve for x
    x = 53,337,845.80/8,917.56
  6. Step 6: Final answer
    x = 5,981.22

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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.