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Finding the Fourth Proportional to 1,975.92, 2,964.23 and 659.85

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Solution

The fourth proportional to 1,975.92, 2,964.23 and 659.85 is: 989.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.92 : 2,964.23 = 659.85 : x
  2. Step 2: Convert to fraction form
    1,975.92/2,964.23 = 659.85/x
  3. Step 3: Cross multiply
    1,975.92x = 2,964.23 × 659.85
  4. Step 4: Simplify right side
    1,975.92x = 1,955,943.87
  5. Step 5: Solve for x
    x = 1,955,943.87/1,975.92
  6. Step 6: Final answer
    x = 989.89

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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.