Home / 9,102.88-13,656.12-4,172.68

Finding the Fourth Proportional to 9,102.88, 13,656.12 and 4,172.68

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Solution

The fourth proportional to 9,102.88, 13,656.12 and 4,172.68 is: 6,259.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,102.88 : 13,656.12 = 4,172.68 : x
  2. Step 2: Convert to fraction form
    9,102.88/13,656.12 = 4,172.68/x
  3. Step 3: Cross multiply
    9,102.88x = 13,656.12 × 4,172.68
  4. Step 4: Simplify right side
    9,102.88x = 56,982,618.80
  5. Step 5: Solve for x
    x = 56,982,618.80/9,102.88
  6. Step 6: Final answer
    x = 6,259.85

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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.