Home / 3,981.13-5,484.46-2,783.87

Finding the Fourth Proportional to 3,981.13, 5,484.46 and 2,783.87

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Solution

The fourth proportional to 3,981.13, 5,484.46 and 2,783.87 is: 3,835.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.13 : 5,484.46 = 2,783.87 : x
  2. Step 2: Convert to fraction form
    3,981.13/5,484.46 = 2,783.87/x
  3. Step 3: Cross multiply
    3,981.13x = 5,484.46 × 2,783.87
  4. Step 4: Simplify right side
    3,981.13x = 15,268,045.91
  5. Step 5: Solve for x
    x = 15,268,045.91/3,981.13
  6. Step 6: Final answer
    x = 3,835.11

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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.