Home / 3,418.47-4,715.82-2,158.92

Finding the Fourth Proportional to 3,418.47, 4,715.82 and 2,158.92

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Solution

The fourth proportional to 3,418.47, 4,715.82 and 2,158.92 is: 2,978.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.47 : 4,715.82 = 2,158.92 : x
  2. Step 2: Convert to fraction form
    3,418.47/4,715.82 = 2,158.92/x
  3. Step 3: Cross multiply
    3,418.47x = 4,715.82 × 2,158.92
  4. Step 4: Simplify right side
    3,418.47x = 10,181,078.11
  5. Step 5: Solve for x
    x = 10,181,078.11/3,418.47
  6. Step 6: Final answer
    x = 2,978.26

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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.