Home / 3,886.39-5,830.36-1,113.08

Finding the Fourth Proportional to 3,886.39, 5,830.36 and 1,113.08

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Solution

The fourth proportional to 3,886.39, 5,830.36 and 1,113.08 is: 1,669.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.39 : 5,830.36 = 1,113.08 : x
  2. Step 2: Convert to fraction form
    3,886.39/5,830.36 = 1,113.08/x
  3. Step 3: Cross multiply
    3,886.39x = 5,830.36 × 1,113.08
  4. Step 4: Simplify right side
    3,886.39x = 6,489,668.90
  5. Step 5: Solve for x
    x = 6,489,668.90/3,886.39
  6. Step 6: Final answer
    x = 1,669.85

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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.