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Finding the Fourth Proportional to 1,659.64, 2,290.43 and 1,099.16

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Solution

The fourth proportional to 1,659.64, 2,290.43 and 1,099.16 is: 1,516.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,659.64 : 2,290.43 = 1,099.16 : x
  2. Step 2: Convert to fraction form
    1,659.64/2,290.43 = 1,099.16/x
  3. Step 3: Cross multiply
    1,659.64x = 2,290.43 × 1,099.16
  4. Step 4: Simplify right side
    1,659.64x = 2,517,549.04
  5. Step 5: Solve for x
    x = 2,517,549.04/1,659.64
  6. Step 6: Final answer
    x = 1,516.92

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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.