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Finding the Fourth Proportional to 2,012.59, 3,018.89 and 917.27

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Solution

The fourth proportional to 2,012.59, 3,018.89 and 917.27 is: 1,375.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,012.59 : 3,018.89 = 917.27 : x
  2. Step 2: Convert to fraction form
    2,012.59/3,018.89 = 917.27/x
  3. Step 3: Cross multiply
    2,012.59x = 3,018.89 × 917.27
  4. Step 4: Simplify right side
    2,012.59x = 2,769,117.55
  5. Step 5: Solve for x
    x = 2,769,117.55/2,012.59
  6. Step 6: Final answer
    x = 1,375.90

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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.