Home / 2,812.23-4,218.53-1,080.86

Finding the Fourth Proportional to 2,812.23, 4,218.53 and 1,080.86

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Solution

The fourth proportional to 2,812.23, 4,218.53 and 1,080.86 is: 1,621.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.23 : 4,218.53 = 1,080.86 : x
  2. Step 2: Convert to fraction form
    2,812.23/4,218.53 = 1,080.86/x
  3. Step 3: Cross multiply
    2,812.23x = 4,218.53 × 1,080.86
  4. Step 4: Simplify right side
    2,812.23x = 4,559,613.84
  5. Step 5: Solve for x
    x = 4,559,613.84/2,812.23
  6. Step 6: Final answer
    x = 1,621.35

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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.