Home / 3,930.17-5,425.88-2,605.66

Finding the Fourth Proportional to 3,930.17, 5,425.88 and 2,605.66

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Solution

The fourth proportional to 3,930.17, 5,425.88 and 2,605.66 is: 3,597.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.17 : 5,425.88 = 2,605.66 : x
  2. Step 2: Convert to fraction form
    3,930.17/5,425.88 = 2,605.66/x
  3. Step 3: Cross multiply
    3,930.17x = 5,425.88 × 2,605.66
  4. Step 4: Simplify right side
    3,930.17x = 14,137,971.89
  5. Step 5: Solve for x
    x = 14,137,971.89/3,930.17
  6. Step 6: Final answer
    x = 3,597.30

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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.