Home / 2,455.10-3,682.23-811.47

Finding the Fourth Proportional to 2,455.10, 3,682.23 and 811.47

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Solution

The fourth proportional to 2,455.10, 3,682.23 and 811.47 is: 1,217.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.10 : 3,682.23 = 811.47 : x
  2. Step 2: Convert to fraction form
    2,455.10/3,682.23 = 811.47/x
  3. Step 3: Cross multiply
    2,455.10x = 3,682.23 × 811.47
  4. Step 4: Simplify right side
    2,455.10x = 2,988,019.18
  5. Step 5: Solve for x
    x = 2,988,019.18/2,455.10
  6. Step 6: Final answer
    x = 1,217.07

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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.