Home / 1,725.86-2,381.70-939.91

Finding the Fourth Proportional to 1,725.86, 2,381.70 and 939.91

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Solution

The fourth proportional to 1,725.86, 2,381.70 and 939.91 is: 1,297.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,725.86 : 2,381.70 = 939.91 : x
  2. Step 2: Convert to fraction form
    1,725.86/2,381.70 = 939.91/x
  3. Step 3: Cross multiply
    1,725.86x = 2,381.70 × 939.91
  4. Step 4: Simplify right side
    1,725.86x = 2,238,583.65
  5. Step 5: Solve for x
    x = 2,238,583.65/1,725.86
  6. Step 6: Final answer
    x = 1,297.08

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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.