Home / 5,425.21-8,128.54-2,961.77

Finding the Fourth Proportional to 5,425.21, 8,128.54 and 2,961.77

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Solution

The fourth proportional to 5,425.21, 8,128.54 and 2,961.77 is: 4,437.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.21 : 8,128.54 = 2,961.77 : x
  2. Step 2: Convert to fraction form
    5,425.21/8,128.54 = 2,961.77/x
  3. Step 3: Cross multiply
    5,425.21x = 8,128.54 × 2,961.77
  4. Step 4: Simplify right side
    5,425.21x = 24,074,812.32
  5. Step 5: Solve for x
    x = 24,074,812.32/5,425.21
  6. Step 6: Final answer
    x = 4,437.58

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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.