Home / 2,755.19-4,131.65-1,111.30

Finding the Fourth Proportional to 2,755.19, 4,131.65 and 1,111.30

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Solution

The fourth proportional to 2,755.19, 4,131.65 and 1,111.30 is: 1,666.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,755.19 : 4,131.65 = 1,111.30 : x
  2. Step 2: Convert to fraction form
    2,755.19/4,131.65 = 1,111.30/x
  3. Step 3: Cross multiply
    2,755.19x = 4,131.65 × 1,111.30
  4. Step 4: Simplify right side
    2,755.19x = 4,591,502.65
  5. Step 5: Solve for x
    x = 4,591,502.65/2,755.19
  6. Step 6: Final answer
    x = 1,666.49

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1.5x scale

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.