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Finding the Fourth Proportional to 1,847.70, 2,771.55 and 1,229.40

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Solution

The fourth proportional to 1,847.70, 2,771.55 and 1,229.40 is: 1,844.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,847.70 : 2,771.55 = 1,229.40 : x
  2. Step 2: Convert to fraction form
    1,847.70/2,771.55 = 1,229.40/x
  3. Step 3: Cross multiply
    1,847.70x = 2,771.55 × 1,229.40
  4. Step 4: Simplify right side
    1,847.70x = 3,407,343.57
  5. Step 5: Solve for x
    x = 3,407,343.57/1,847.70
  6. Step 6: Final answer
    x = 1,844.10

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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.