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Finding the Fourth Proportional to 2,644.72, 3,967.11 and 1,258.19

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Solution

The fourth proportional to 2,644.72, 3,967.11 and 1,258.19 is: 1,887.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,644.72 : 3,967.11 = 1,258.19 : x
  2. Step 2: Convert to fraction form
    2,644.72/3,967.11 = 1,258.19/x
  3. Step 3: Cross multiply
    2,644.72x = 3,967.11 × 1,258.19
  4. Step 4: Simplify right side
    2,644.72x = 4,991,378.13
  5. Step 5: Solve for x
    x = 4,991,378.13/2,644.72
  6. Step 6: Final answer
    x = 1,887.30

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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.