Home / 1,997.24-2,757.34-1,521.40

Finding the Fourth Proportional to 1,997.24, 2,757.34 and 1,521.40

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Solution

The fourth proportional to 1,997.24, 2,757.34 and 1,521.40 is: 2,100.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.24 : 2,757.34 = 1,521.40 : x
  2. Step 2: Convert to fraction form
    1,997.24/2,757.34 = 1,521.40/x
  3. Step 3: Cross multiply
    1,997.24x = 2,757.34 × 1,521.40
  4. Step 4: Simplify right side
    1,997.24x = 4,195,017.08
  5. Step 5: Solve for x
    x = 4,195,017.08/1,997.24
  6. Step 6: Final answer
    x = 2,100.41

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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.