Home / 3,929.65-5,425.16-2,605.15

Finding the Fourth Proportional to 3,929.65, 5,425.16 and 2,605.15

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Solution

The fourth proportional to 3,929.65, 5,425.16 and 2,605.15 is: 3,596.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.65 : 5,425.16 = 2,605.15 : x
  2. Step 2: Convert to fraction form
    3,929.65/5,425.16 = 2,605.15/x
  3. Step 3: Cross multiply
    3,929.65x = 5,425.16 × 2,605.15
  4. Step 4: Simplify right side
    3,929.65x = 14,133,338.75
  5. Step 5: Solve for x
    x = 14,133,338.75/3,929.65
  6. Step 6: Final answer
    x = 3,596.59

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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.