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Finding the Fourth Proportional to 2,666.58, 3,997.96 and 1,260.22

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Solution

The fourth proportional to 2,666.58, 3,997.96 and 1,260.22 is: 1,889.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,666.58 : 3,997.96 = 1,260.22 : x
  2. Step 2: Convert to fraction form
    2,666.58/3,997.96 = 1,260.22/x
  3. Step 3: Cross multiply
    2,666.58x = 3,997.96 × 1,260.22
  4. Step 4: Simplify right side
    2,666.58x = 5,038,309.12
  5. Step 5: Solve for x
    x = 5,038,309.12/2,666.58
  6. Step 6: Final answer
    x = 1,889.43

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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.