Home / 1,635.21-2,452.35-812.88

Finding the Fourth Proportional to 1,635.21, 2,452.35 and 812.88

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Solution

The fourth proportional to 1,635.21, 2,452.35 and 812.88 is: 1,219.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,635.21 : 2,452.35 = 812.88 : x
  2. Step 2: Convert to fraction form
    1,635.21/2,452.35 = 812.88/x
  3. Step 3: Cross multiply
    1,635.21x = 2,452.35 × 812.88
  4. Step 4: Simplify right side
    1,635.21x = 1,993,466.27
  5. Step 5: Solve for x
    x = 1,993,466.27/1,635.21
  6. Step 6: Final answer
    x = 1,219.09

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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.