Home / 3,886.83-5,830.04-1,421.39

Finding the Fourth Proportional to 3,886.83, 5,830.04 and 1,421.39

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Solution

The fourth proportional to 3,886.83, 5,830.04 and 1,421.39 is: 2,132.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.83 : 5,830.04 = 1,421.39 : x
  2. Step 2: Convert to fraction form
    3,886.83/5,830.04 = 1,421.39/x
  3. Step 3: Cross multiply
    3,886.83x = 5,830.04 × 1,421.39
  4. Step 4: Simplify right side
    3,886.83x = 8,286,778.68
  5. Step 5: Solve for x
    x = 8,286,778.68/3,886.83
  6. Step 6: Final answer
    x = 2,132.01

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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.