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Finding the Fourth Proportional to 8,679.25, 11,983.13 and 5,373.01

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Solution

The fourth proportional to 8,679.25, 11,983.13 and 5,373.01 is: 7,418.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.25 : 11,983.13 = 5,373.01 : x
  2. Step 2: Convert to fraction form
    8,679.25/11,983.13 = 5,373.01/x
  3. Step 3: Cross multiply
    8,679.25x = 11,983.13 × 5,373.01
  4. Step 4: Simplify right side
    8,679.25x = 64,385,477.32
  5. Step 5: Solve for x
    x = 64,385,477.32/8,679.25
  6. Step 6: Final answer
    x = 7,418.32

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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.