Home / 1,728.74-2,383.60-1,412.84

Finding the Fourth Proportional to 1,728.74, 2,383.60 and 1,412.84

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Solution

The fourth proportional to 1,728.74, 2,383.60 and 1,412.84 is: 1,948.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.74 : 2,383.60 = 1,412.84 : x
  2. Step 2: Convert to fraction form
    1,728.74/2,383.60 = 1,412.84/x
  3. Step 3: Cross multiply
    1,728.74x = 2,383.60 × 1,412.84
  4. Step 4: Simplify right side
    1,728.74x = 3,367,645.42
  5. Step 5: Solve for x
    x = 3,367,645.42/1,728.74
  6. Step 6: Final answer
    x = 1,948.03

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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.