Home / 1,939.10-2,675.94-1,054.90

Finding the Fourth Proportional to 1,939.10, 2,675.94 and 1,054.90

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Solution

The fourth proportional to 1,939.10, 2,675.94 and 1,054.90 is: 1,455.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.10 : 2,675.94 = 1,054.90 : x
  2. Step 2: Convert to fraction form
    1,939.10/2,675.94 = 1,054.90/x
  3. Step 3: Cross multiply
    1,939.10x = 2,675.94 × 1,054.90
  4. Step 4: Simplify right side
    1,939.10x = 2,822,849.11
  5. Step 5: Solve for x
    x = 2,822,849.11/1,939.10
  6. Step 6: Final answer
    x = 1,455.75

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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.