Home / 7,905.39-11,862.83-3,160.70

Finding the Fourth Proportional to 7,905.39, 11,862.83 and 3,160.70

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Solution

The fourth proportional to 7,905.39, 11,862.83 and 3,160.70 is: 4,742.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.39 : 11,862.83 = 3,160.70 : x
  2. Step 2: Convert to fraction form
    7,905.39/11,862.83 = 3,160.70/x
  3. Step 3: Cross multiply
    7,905.39x = 11,862.83 × 3,160.70
  4. Step 4: Simplify right side
    7,905.39x = 37,494,846.78
  5. Step 5: Solve for x
    x = 37,494,846.78/7,905.39
  6. Step 6: Final answer
    x = 4,742.95

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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.