Home / 2,812.68-4,219.20-1,656

Finding the Fourth Proportional to 2,812.68, 4,219.20 and 1,656

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Solution

The fourth proportional to 2,812.68, 4,219.20 and 1,656 is: 2,484.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.68 : 4,219.20 = 1,656 : x
  2. Step 2: Convert to fraction form
    2,812.68/4,219.20 = 1,656/x
  3. Step 3: Cross multiply
    2,812.68x = 4,219.20 × 1,656
  4. Step 4: Simplify right side
    2,812.68x = 6,986,995.20
  5. Step 5: Solve for x
    x = 6,986,995.20/2,812.68
  6. Step 6: Final answer
    x = 2,484.11

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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.