Home / 2,015.05-2,781.45-1,270.25

Finding the Fourth Proportional to 2,015.05, 2,781.45 and 1,270.25

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Solution

The fourth proportional to 2,015.05, 2,781.45 and 1,270.25 is: 1,753.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.05 : 2,781.45 = 1,270.25 : x
  2. Step 2: Convert to fraction form
    2,015.05/2,781.45 = 1,270.25/x
  3. Step 3: Cross multiply
    2,015.05x = 2,781.45 × 1,270.25
  4. Step 4: Simplify right side
    2,015.05x = 3,533,136.86
  5. Step 5: Solve for x
    x = 3,533,136.86/2,015.05
  6. Step 6: Final answer
    x = 1,753.37

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.