Home / 1,659.45-2,489.37-1,438.32

Finding the Fourth Proportional to 1,659.45, 2,489.37 and 1,438.32

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Solution

The fourth proportional to 1,659.45, 2,489.37 and 1,438.32 is: 2,157.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,659.45 : 2,489.37 = 1,438.32 : x
  2. Step 2: Convert to fraction form
    1,659.45/2,489.37 = 1,438.32/x
  3. Step 3: Cross multiply
    1,659.45x = 2,489.37 × 1,438.32
  4. Step 4: Simplify right side
    1,659.45x = 3,580,510.66
  5. Step 5: Solve for x
    x = 3,580,510.66/1,659.45
  6. Step 6: Final answer
    x = 2,157.65

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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.