Home / 5,425.35-8,135.29-2,647.86

Finding the Fourth Proportional to 5,425.35, 8,135.29 and 2,647.86

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Solution

The fourth proportional to 5,425.35, 8,135.29 and 2,647.86 is: 3,970.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.35 : 8,135.29 = 2,647.86 : x
  2. Step 2: Convert to fraction form
    5,425.35/8,135.29 = 2,647.86/x
  3. Step 3: Cross multiply
    5,425.35x = 8,135.29 × 2,647.86
  4. Step 4: Simplify right side
    5,425.35x = 21,541,066.89
  5. Step 5: Solve for x
    x = 21,541,066.89/5,425.35
  6. Step 6: Final answer
    x = 3,970.45

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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.