Home / 1,259.83-1,734.93-1,081.36

Finding the Fourth Proportional to 1,259.83, 1,734.93 and 1,081.36

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Solution

The fourth proportional to 1,259.83, 1,734.93 and 1,081.36 is: 1,489.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.83 : 1,734.93 = 1,081.36 : x
  2. Step 2: Convert to fraction form
    1,259.83/1,734.93 = 1,081.36/x
  3. Step 3: Cross multiply
    1,259.83x = 1,734.93 × 1,081.36
  4. Step 4: Simplify right side
    1,259.83x = 1,876,083.90
  5. Step 5: Solve for x
    x = 1,876,083.90/1,259.83
  6. Step 6: Final answer
    x = 1,489.16

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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.