Home / 1,987.24-2,982.90-1,682.20

Finding the Fourth Proportional to 1,987.24, 2,982.90 and 1,682.20

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Solution

The fourth proportional to 1,987.24, 2,982.90 and 1,682.20 is: 2,525.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987.24 : 2,982.90 = 1,682.20 : x
  2. Step 2: Convert to fraction form
    1,987.24/2,982.90 = 1,682.20/x
  3. Step 3: Cross multiply
    1,987.24x = 2,982.90 × 1,682.20
  4. Step 4: Simplify right side
    1,987.24x = 5,017,834.38
  5. Step 5: Solve for x
    x = 5,017,834.38/1,987.24
  6. Step 6: Final answer
    x = 2,525.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.