Home / 2,143.66-2,958.44-1,259.42

Finding the Fourth Proportional to 2,143.66, 2,958.44 and 1,259.42

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Solution

The fourth proportional to 2,143.66, 2,958.44 and 1,259.42 is: 1,738.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.66 : 2,958.44 = 1,259.42 : x
  2. Step 2: Convert to fraction form
    2,143.66/2,958.44 = 1,259.42/x
  3. Step 3: Cross multiply
    2,143.66x = 2,958.44 × 1,259.42
  4. Step 4: Simplify right side
    2,143.66x = 3,725,918.50
  5. Step 5: Solve for x
    x = 3,725,918.50/2,143.66
  6. Step 6: Final answer
    x = 1,738.11

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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.