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Finding the Fourth Proportional to 8,378.25, 11,561.99 and 4,652.25

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Solution

The fourth proportional to 8,378.25, 11,561.99 and 4,652.25 is: 6,420.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.25 : 11,561.99 = 4,652.25 : x
  2. Step 2: Convert to fraction form
    8,378.25/11,561.99 = 4,652.25/x
  3. Step 3: Cross multiply
    8,378.25x = 11,561.99 × 4,652.25
  4. Step 4: Simplify right side
    8,378.25x = 53,789,244.72
  5. Step 5: Solve for x
    x = 53,789,244.72/8,378.25
  6. Step 6: Final answer
    x = 6,420.11

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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.