Home / 3,105.10-4,657.65-3,072.70

Finding the Fourth Proportional to 3,105.10, 4,657.65 and 3,072.70

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Solution

The fourth proportional to 3,105.10, 4,657.65 and 3,072.70 is: 4,609.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.10 : 4,657.65 = 3,072.70 : x
  2. Step 2: Convert to fraction form
    3,105.10/4,657.65 = 3,072.70/x
  3. Step 3: Cross multiply
    3,105.10x = 4,657.65 × 3,072.70
  4. Step 4: Simplify right side
    3,105.10x = 14,311,561.16
  5. Step 5: Solve for x
    x = 14,311,561.16/3,105.10
  6. Step 6: Final answer
    x = 4,609.05

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Double scale
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Similar ratio
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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.