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Finding the Fourth Proportional to 3,775.70, 5,663.55 and 1,310.53

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Solution

The fourth proportional to 3,775.70, 5,663.55 and 1,310.53 is: 1,965.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,775.70 : 5,663.55 = 1,310.53 : x
  2. Step 2: Convert to fraction form
    3,775.70/5,663.55 = 1,310.53/x
  3. Step 3: Cross multiply
    3,775.70x = 5,663.55 × 1,310.53
  4. Step 4: Simplify right side
    3,775.70x = 7,422,223.86
  5. Step 5: Solve for x
    x = 7,422,223.86/3,775.70
  6. Step 6: Final answer
    x = 1,965.79

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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.