Home / 2,254.91-3,111.77-1,260.19

Finding the Fourth Proportional to 2,254.91, 3,111.77 and 1,260.19

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Solution

The fourth proportional to 2,254.91, 3,111.77 and 1,260.19 is: 1,739.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,254.91 : 3,111.77 = 1,260.19 : x
  2. Step 2: Convert to fraction form
    2,254.91/3,111.77 = 1,260.19/x
  3. Step 3: Cross multiply
    2,254.91x = 3,111.77 × 1,260.19
  4. Step 4: Simplify right side
    2,254.91x = 3,921,402.11
  5. Step 5: Solve for x
    x = 3,921,402.11/2,254.91
  6. Step 6: Final answer
    x = 1,739.05

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1.5x scale

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.