Home / 8,428.89-12,643.33-2,584.74

Finding the Fourth Proportional to 8,428.89, 12,643.33 and 2,584.74

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Solution

The fourth proportional to 8,428.89, 12,643.33 and 2,584.74 is: 3,877.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.89 : 12,643.33 = 2,584.74 : x
  2. Step 2: Convert to fraction form
    8,428.89/12,643.33 = 2,584.74/x
  3. Step 3: Cross multiply
    8,428.89x = 12,643.33 × 2,584.74
  4. Step 4: Simplify right side
    8,428.89x = 32,679,720.78
  5. Step 5: Solve for x
    x = 32,679,720.78/8,428.89
  6. Step 6: Final answer
    x = 3,877.11

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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.