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Finding the Fourth Proportional to 1,659.65, 2,289.80 and 960.89

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Solution

The fourth proportional to 1,659.65, 2,289.80 and 960.89 is: 1,325.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,659.65 : 2,289.80 = 960.89 : x
  2. Step 2: Convert to fraction form
    1,659.65/2,289.80 = 960.89/x
  3. Step 3: Cross multiply
    1,659.65x = 2,289.80 × 960.89
  4. Step 4: Simplify right side
    1,659.65x = 2,200,236.88
  5. Step 5: Solve for x
    x = 2,200,236.88/1,659.65
  6. Step 6: Final answer
    x = 1,325.73

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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.