Home / 3,900.72-5,382.18-2,483.90

Finding the Fourth Proportional to 3,900.72, 5,382.18 and 2,483.90

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Solution

The fourth proportional to 3,900.72, 5,382.18 and 2,483.90 is: 3,427.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.72 : 5,382.18 = 2,483.90 : x
  2. Step 2: Convert to fraction form
    3,900.72/5,382.18 = 2,483.90/x
  3. Step 3: Cross multiply
    3,900.72x = 5,382.18 × 2,483.90
  4. Step 4: Simplify right side
    3,900.72x = 13,368,769.99
  5. Step 5: Solve for x
    x = 13,368,769.99/3,900.72
  6. Step 6: Final answer
    x = 3,427.26

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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.