Home / 6,418.74-8,858.49-3,900.63

Finding the Fourth Proportional to 6,418.74, 8,858.49 and 3,900.63

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Solution

The fourth proportional to 6,418.74, 8,858.49 and 3,900.63 is: 5,383.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,418.74 : 8,858.49 = 3,900.63 : x
  2. Step 2: Convert to fraction form
    6,418.74/8,858.49 = 3,900.63/x
  3. Step 3: Cross multiply
    6,418.74x = 8,858.49 × 3,900.63
  4. Step 4: Simplify right side
    6,418.74x = 34,553,691.85
  5. Step 5: Solve for x
    x = 34,553,691.85/6,418.74
  6. Step 6: Final answer
    x = 5,383.25

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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.