Home / 2,455.30-3,683.07-811.99

Finding the Fourth Proportional to 2,455.30, 3,683.07 and 811.99

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Solution

The fourth proportional to 2,455.30, 3,683.07 and 811.99 is: 1,218.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.30 : 3,683.07 = 811.99 : x
  2. Step 2: Convert to fraction form
    2,455.30/3,683.07 = 811.99/x
  3. Step 3: Cross multiply
    2,455.30x = 3,683.07 × 811.99
  4. Step 4: Simplify right side
    2,455.30x = 2,990,616.01
  5. Step 5: Solve for x
    x = 2,990,616.01/2,455.30
  6. Step 6: Final answer
    x = 1,218.02

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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.