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Finding the Fourth Proportional to 8,379.36, 11,563.53 and 4,653.36

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Solution

The fourth proportional to 8,379.36, 11,563.53 and 4,653.36 is: 6,421.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.36 : 11,563.53 = 4,653.36 : x
  2. Step 2: Convert to fraction form
    8,379.36/11,563.53 = 4,653.36/x
  3. Step 3: Cross multiply
    8,379.36x = 11,563.53 × 4,653.36
  4. Step 4: Simplify right side
    8,379.36x = 53,809,267.96
  5. Step 5: Solve for x
    x = 53,809,267.96/8,379.36
  6. Step 6: Final answer
    x = 6,421.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.