Home / 1,727.60-2,381.22-1,222.79

Finding the Fourth Proportional to 1,727.60, 2,381.22 and 1,222.79

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Solution

The fourth proportional to 1,727.60, 2,381.22 and 1,222.79 is: 1,685.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,727.60 : 2,381.22 = 1,222.79 : x
  2. Step 2: Convert to fraction form
    1,727.60/2,381.22 = 1,222.79/x
  3. Step 3: Cross multiply
    1,727.60x = 2,381.22 × 1,222.79
  4. Step 4: Simplify right side
    1,727.60x = 2,911,720.10
  5. Step 5: Solve for x
    x = 2,911,720.10/1,727.60
  6. Step 6: Final answer
    x = 1,685.42

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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.