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Finding the Fourth Proportional to 2,830.28, 4,224.71 and 2,621.81

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Solution

The fourth proportional to 2,830.28, 4,224.71 and 2,621.81 is: 3,913.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.28 : 4,224.71 = 2,621.81 : x
  2. Step 2: Convert to fraction form
    2,830.28/4,224.71 = 2,621.81/x
  3. Step 3: Cross multiply
    2,830.28x = 4,224.71 × 2,621.81
  4. Step 4: Simplify right side
    2,830.28x = 11,076,404.04
  5. Step 5: Solve for x
    x = 11,076,404.04/2,830.28
  6. Step 6: Final answer
    x = 3,913.54

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.