Home / 8,687.21-11,983.94-5,495.13

Finding the Fourth Proportional to 8,687.21, 11,983.94 and 5,495.13

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Solution

The fourth proportional to 8,687.21, 11,983.94 and 5,495.13 is: 7,580.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.21 : 11,983.94 = 5,495.13 : x
  2. Step 2: Convert to fraction form
    8,687.21/11,983.94 = 5,495.13/x
  3. Step 3: Cross multiply
    8,687.21x = 11,983.94 × 5,495.13
  4. Step 4: Simplify right side
    8,687.21x = 65,853,308.21
  5. Step 5: Solve for x
    x = 65,853,308.21/8,687.21
  6. Step 6: Final answer
    x = 7,580.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.