Home / 2,812.28-4,218.42-1,080.50

Finding the Fourth Proportional to 2,812.28, 4,218.42 and 1,080.50

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Solution

The fourth proportional to 2,812.28, 4,218.42 and 1,080.50 is: 1,620.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.28 : 4,218.42 = 1,080.50 : x
  2. Step 2: Convert to fraction form
    2,812.28/4,218.42 = 1,080.50/x
  3. Step 3: Cross multiply
    2,812.28x = 4,218.42 × 1,080.50
  4. Step 4: Simplify right side
    2,812.28x = 4,558,002.81
  5. Step 5: Solve for x
    x = 4,558,002.81/2,812.28
  6. Step 6: Final answer
    x = 1,620.75

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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.