Home / 3,980.15-5,474.35-3,192.47

Finding the Fourth Proportional to 3,980.15, 5,474.35 and 3,192.47

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Solution

The fourth proportional to 3,980.15, 5,474.35 and 3,192.47 is: 4,390.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.15 : 5,474.35 = 3,192.47 : x
  2. Step 2: Convert to fraction form
    3,980.15/5,474.35 = 3,192.47/x
  3. Step 3: Cross multiply
    3,980.15x = 5,474.35 × 3,192.47
  4. Step 4: Simplify right side
    3,980.15x = 17,476,715.82
  5. Step 5: Solve for x
    x = 17,476,715.82/3,980.15
  6. Step 6: Final answer
    x = 4,390.97

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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.