Home / 8,425.19-12,628.89-3,156.76

Finding the Fourth Proportional to 8,425.19, 12,628.89 and 3,156.76

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Solution

The fourth proportional to 8,425.19, 12,628.89 and 3,156.76 is: 4,731.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,425.19 : 12,628.89 = 3,156.76 : x
  2. Step 2: Convert to fraction form
    8,425.19/12,628.89 = 3,156.76/x
  3. Step 3: Cross multiply
    8,425.19x = 12,628.89 × 3,156.76
  4. Step 4: Simplify right side
    8,425.19x = 39,866,374.80
  5. Step 5: Solve for x
    x = 39,866,374.80/8,425.19
  6. Step 6: Final answer
    x = 4,731.81

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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.