Home / 3,885.37-5,827.05-1,111.40

Finding the Fourth Proportional to 3,885.37, 5,827.05 and 1,111.40

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Solution

The fourth proportional to 3,885.37, 5,827.05 and 1,111.40 is: 1,666.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.37 : 5,827.05 = 1,111.40 : x
  2. Step 2: Convert to fraction form
    3,885.37/5,827.05 = 1,111.40/x
  3. Step 3: Cross multiply
    3,885.37x = 5,827.05 × 1,111.40
  4. Step 4: Simplify right side
    3,885.37x = 6,476,171.36
  5. Step 5: Solve for x
    x = 6,476,171.36/3,885.37
  6. Step 6: Final answer
    x = 1,666.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.