Home / 5,386.22-8,081.40-2,101.64

Finding the Fourth Proportional to 5,386.22, 8,081.40 and 2,101.64

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Solution

The fourth proportional to 5,386.22, 8,081.40 and 2,101.64 is: 3,153.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.22 : 8,081.40 = 2,101.64 : x
  2. Step 2: Convert to fraction form
    5,386.22/8,081.40 = 2,101.64/x
  3. Step 3: Cross multiply
    5,386.22x = 8,081.40 × 2,101.64
  4. Step 4: Simplify right side
    5,386.22x = 16,984,193.50
  5. Step 5: Solve for x
    x = 16,984,193.50/5,386.22
  6. Step 6: Final answer
    x = 3,153.27

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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.