Home / 8,389.88-12,584.86-3,126.06

Finding the Fourth Proportional to 8,389.88, 12,584.86 and 3,126.06

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Solution

The fourth proportional to 8,389.88, 12,584.86 and 3,126.06 is: 4,689.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.88 : 12,584.86 = 3,126.06 : x
  2. Step 2: Convert to fraction form
    8,389.88/12,584.86 = 3,126.06/x
  3. Step 3: Cross multiply
    8,389.88x = 12,584.86 × 3,126.06
  4. Step 4: Simplify right side
    8,389.88x = 39,341,027.45
  5. Step 5: Solve for x
    x = 39,341,027.45/8,389.88
  6. Step 6: Final answer
    x = 4,689.10

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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.