Home / 1,939.66-2,910.26-707.15

Finding the Fourth Proportional to 1,939.66, 2,910.26 and 707.15

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Solution

The fourth proportional to 1,939.66, 2,910.26 and 707.15 is: 1,061.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.66 : 2,910.26 = 707.15 : x
  2. Step 2: Convert to fraction form
    1,939.66/2,910.26 = 707.15/x
  3. Step 3: Cross multiply
    1,939.66x = 2,910.26 × 707.15
  4. Step 4: Simplify right side
    1,939.66x = 2,057,990.36
  5. Step 5: Solve for x
    x = 2,057,990.36/1,939.66
  6. Step 6: Final answer
    x = 1,061.01

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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.