Home / 1,398.15-1,919.88-1,250.73

Finding the Fourth Proportional to 1,398.15, 1,919.88 and 1,250.73

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Solution

The fourth proportional to 1,398.15, 1,919.88 and 1,250.73 is: 1,717.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398.15 : 1,919.88 = 1,250.73 : x
  2. Step 2: Convert to fraction form
    1,398.15/1,919.88 = 1,250.73/x
  3. Step 3: Cross multiply
    1,398.15x = 1,919.88 × 1,250.73
  4. Step 4: Simplify right side
    1,398.15x = 2,401,251.51
  5. Step 5: Solve for x
    x = 2,401,251.51/1,398.15
  6. Step 6: Final answer
    x = 1,717.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.