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Finding the Fourth Proportional to 1,889.13, 2,606.88 and 1,092.21

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Solution

The fourth proportional to 1,889.13, 2,606.88 and 1,092.21 is: 1,507.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.13 : 2,606.88 = 1,092.21 : x
  2. Step 2: Convert to fraction form
    1,889.13/2,606.88 = 1,092.21/x
  3. Step 3: Cross multiply
    1,889.13x = 2,606.88 × 1,092.21
  4. Step 4: Simplify right side
    1,889.13x = 2,847,260.40
  5. Step 5: Solve for x
    x = 2,847,260.40/1,889.13
  6. Step 6: Final answer
    x = 1,507.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.