Home / 8,425.79-12,638.60-2,185.77

Finding the Fourth Proportional to 8,425.79, 12,638.60 and 2,185.77

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Solution

The fourth proportional to 8,425.79, 12,638.60 and 2,185.77 is: 3,278.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,425.79 : 12,638.60 = 2,185.77 : x
  2. Step 2: Convert to fraction form
    8,425.79/12,638.60 = 2,185.77/x
  3. Step 3: Cross multiply
    8,425.79x = 12,638.60 × 2,185.77
  4. Step 4: Simplify right side
    8,425.79x = 27,625,061.79
  5. Step 5: Solve for x
    x = 27,625,061.79/8,425.79
  6. Step 6: Final answer
    x = 3,278.63

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1.5x scale

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.