Home / 7,100.10-10,650.15-1,905.97

Finding the Fourth Proportional to 7,100.10, 10,650.15 and 1,905.97

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Solution

The fourth proportional to 7,100.10, 10,650.15 and 1,905.97 is: 2,858.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,100.10 : 10,650.15 = 1,905.97 : x
  2. Step 2: Convert to fraction form
    7,100.10/10,650.15 = 1,905.97/x
  3. Step 3: Cross multiply
    7,100.10x = 10,650.15 × 1,905.97
  4. Step 4: Simplify right side
    7,100.10x = 20,298,878.09
  5. Step 5: Solve for x
    x = 20,298,878.09/7,100.10
  6. Step 6: Final answer
    x = 2,858.96

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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.