Home / 3,478.47-4,800.22-2,151.82

Finding the Fourth Proportional to 3,478.47, 4,800.22 and 2,151.82

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Solution

The fourth proportional to 3,478.47, 4,800.22 and 2,151.82 is: 2,969.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.47 : 4,800.22 = 2,151.82 : x
  2. Step 2: Convert to fraction form
    3,478.47/4,800.22 = 2,151.82/x
  3. Step 3: Cross multiply
    3,478.47x = 4,800.22 × 2,151.82
  4. Step 4: Simplify right side
    3,478.47x = 10,329,198.64
  5. Step 5: Solve for x
    x = 10,329,198.64/3,478.47
  6. Step 6: Final answer
    x = 2,969.47

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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.