Home / 1,939.45-2,676.36-1,055.20

Finding the Fourth Proportional to 1,939.45, 2,676.36 and 1,055.20

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Solution

The fourth proportional to 1,939.45, 2,676.36 and 1,055.20 is: 1,456.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.45 : 2,676.36 = 1,055.20 : x
  2. Step 2: Convert to fraction form
    1,939.45/2,676.36 = 1,055.20/x
  3. Step 3: Cross multiply
    1,939.45x = 2,676.36 × 1,055.20
  4. Step 4: Simplify right side
    1,939.45x = 2,824,095.07
  5. Step 5: Solve for x
    x = 2,824,095.07/1,939.45
  6. Step 6: Final answer
    x = 1,456.13

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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.