Home / 1,939.58-2,673.51-1,309.91

Finding the Fourth Proportional to 1,939.58, 2,673.51 and 1,309.91

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Solution

The fourth proportional to 1,939.58, 2,673.51 and 1,309.91 is: 1,805.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.58 : 2,673.51 = 1,309.91 : x
  2. Step 2: Convert to fraction form
    1,939.58/2,673.51 = 1,309.91/x
  3. Step 3: Cross multiply
    1,939.58x = 2,673.51 × 1,309.91
  4. Step 4: Simplify right side
    1,939.58x = 3,502,050.48
  5. Step 5: Solve for x
    x = 3,502,050.48/1,939.58
  6. Step 6: Final answer
    x = 1,805.57

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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.