Home / 2,143.61-2,958.09-1,259.51

Finding the Fourth Proportional to 2,143.61, 2,958.09 and 1,259.51

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Solution

The fourth proportional to 2,143.61, 2,958.09 and 1,259.51 is: 1,738.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.61 : 2,958.09 = 1,259.51 : x
  2. Step 2: Convert to fraction form
    2,143.61/2,958.09 = 1,259.51/x
  3. Step 3: Cross multiply
    2,143.61x = 2,958.09 × 1,259.51
  4. Step 4: Simplify right side
    2,143.61x = 3,725,743.94
  5. Step 5: Solve for x
    x = 3,725,743.94/2,143.61
  6. Step 6: Final answer
    x = 1,738.07

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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.