Home / 8,125.47-12,188.64-2,579.25

Finding the Fourth Proportional to 8,125.47, 12,188.64 and 2,579.25

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Solution

The fourth proportional to 8,125.47, 12,188.64 and 2,579.25 is: 3,869.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.47 : 12,188.64 = 2,579.25 : x
  2. Step 2: Convert to fraction form
    8,125.47/12,188.64 = 2,579.25/x
  3. Step 3: Cross multiply
    8,125.47x = 12,188.64 × 2,579.25
  4. Step 4: Simplify right side
    8,125.47x = 31,437,549.72
  5. Step 5: Solve for x
    x = 31,437,549.72/8,125.47
  6. Step 6: Final answer
    x = 3,869.01

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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.