Home / 2,147.75-3,217.02-1,621.95

Finding the Fourth Proportional to 2,147.75, 3,217.02 and 1,621.95

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Solution

The fourth proportional to 2,147.75, 3,217.02 and 1,621.95 is: 2,429.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,147.75 : 3,217.02 = 1,621.95 : x
  2. Step 2: Convert to fraction form
    2,147.75/3,217.02 = 1,621.95/x
  3. Step 3: Cross multiply
    2,147.75x = 3,217.02 × 1,621.95
  4. Step 4: Simplify right side
    2,147.75x = 5,217,845.59
  5. Step 5: Solve for x
    x = 5,217,845.59/2,147.75
  6. Step 6: Final answer
    x = 2,429.45

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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.