Home / 5,431.26-8,133.62-4,905.36

Finding the Fourth Proportional to 5,431.26, 8,133.62 and 4,905.36

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Solution

The fourth proportional to 5,431.26, 8,133.62 and 4,905.36 is: 7,346.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.26 : 8,133.62 = 4,905.36 : x
  2. Step 2: Convert to fraction form
    5,431.26/8,133.62 = 4,905.36/x
  3. Step 3: Cross multiply
    5,431.26x = 8,133.62 × 4,905.36
  4. Step 4: Simplify right side
    5,431.26x = 39,898,334.20
  5. Step 5: Solve for x
    x = 39,898,334.20/5,431.26
  6. Step 6: Final answer
    x = 7,346.05

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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.