Home / 2,997.78-4,136.22-1,818.63

Finding the Fourth Proportional to 2,997.78, 4,136.22 and 1,818.63

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Solution

The fourth proportional to 2,997.78, 4,136.22 and 1,818.63 is: 2,509.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,997.78 : 4,136.22 = 1,818.63 : x
  2. Step 2: Convert to fraction form
    2,997.78/4,136.22 = 1,818.63/x
  3. Step 3: Cross multiply
    2,997.78x = 4,136.22 × 1,818.63
  4. Step 4: Simplify right side
    2,997.78x = 7,522,253.78
  5. Step 5: Solve for x
    x = 7,522,253.78/2,997.78
  6. Step 6: Final answer
    x = 2,509.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.