Home / 3,658.19-5,048.31-1,979.59

Finding the Fourth Proportional to 3,658.19, 5,048.31 and 1,979.59

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Solution

The fourth proportional to 3,658.19, 5,048.31 and 1,979.59 is: 2,731.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,658.19 : 5,048.31 = 1,979.59 : x
  2. Step 2: Convert to fraction form
    3,658.19/5,048.31 = 1,979.59/x
  3. Step 3: Cross multiply
    3,658.19x = 5,048.31 × 1,979.59
  4. Step 4: Simplify right side
    3,658.19x = 9,993,583.99
  5. Step 5: Solve for x
    x = 9,993,583.99/3,658.19
  6. Step 6: Final answer
    x = 2,731.84

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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.