Home / 1,960.24-2,939.80-661.68

Finding the Fourth Proportional to 1,960.24, 2,939.80 and 661.68

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Solution

The fourth proportional to 1,960.24, 2,939.80 and 661.68 is: 992.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,960.24 : 2,939.80 = 661.68 : x
  2. Step 2: Convert to fraction form
    1,960.24/2,939.80 = 661.68/x
  3. Step 3: Cross multiply
    1,960.24x = 2,939.80 × 661.68
  4. Step 4: Simplify right side
    1,960.24x = 1,945,206.86
  5. Step 5: Solve for x
    x = 1,945,206.86/1,960.24
  6. Step 6: Final answer
    x = 992.33

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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.