Home / 2,454.40-3,682.11-811.10

Finding the Fourth Proportional to 2,454.40, 3,682.11 and 811.10

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Solution

The fourth proportional to 2,454.40, 3,682.11 and 811.10 is: 1,216.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,454.40 : 3,682.11 = 811.10 : x
  2. Step 2: Convert to fraction form
    2,454.40/3,682.11 = 811.10/x
  3. Step 3: Cross multiply
    2,454.40x = 3,682.11 × 811.10
  4. Step 4: Simplify right side
    2,454.40x = 2,986,559.42
  5. Step 5: Solve for x
    x = 2,986,559.42/2,454.40
  6. Step 6: Final answer
    x = 1,216.82

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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.