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Finding the Fourth Proportional to 3,709.01, 5,564.39 and 1,111.88

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Solution

The fourth proportional to 3,709.01, 5,564.39 and 1,111.88 is: 1,668.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,709.01 : 5,564.39 = 1,111.88 : x
  2. Step 2: Convert to fraction form
    3,709.01/5,564.39 = 1,111.88/x
  3. Step 3: Cross multiply
    3,709.01x = 5,564.39 × 1,111.88
  4. Step 4: Simplify right side
    3,709.01x = 6,186,900.57
  5. Step 5: Solve for x
    x = 6,186,900.57/3,709.01
  6. Step 6: Final answer
    x = 1,668.08

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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.