Home / 7,410.25-11,115.38-1,938.25

Finding the Fourth Proportional to 7,410.25, 11,115.38 and 1,938.25

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Solution

The fourth proportional to 7,410.25, 11,115.38 and 1,938.25 is: 2,907.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,410.25 : 11,115.38 = 1,938.25 : x
  2. Step 2: Convert to fraction form
    7,410.25/11,115.38 = 1,938.25/x
  3. Step 3: Cross multiply
    7,410.25x = 11,115.38 × 1,938.25
  4. Step 4: Simplify right side
    7,410.25x = 21,544,385.29
  5. Step 5: Solve for x
    x = 21,544,385.29/7,410.25
  6. Step 6: Final answer
    x = 2,907.38

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Half scale
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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.