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Finding the Fourth Proportional to 8,776.72, 13,139.13 and 5,647.49

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Solution

The fourth proportional to 8,776.72, 13,139.13 and 5,647.49 is: 8,454.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,776.72 : 13,139.13 = 5,647.49 : x
  2. Step 2: Convert to fraction form
    8,776.72/13,139.13 = 5,647.49/x
  3. Step 3: Cross multiply
    8,776.72x = 13,139.13 × 5,647.49
  4. Step 4: Simplify right side
    8,776.72x = 74,203,110.04
  5. Step 5: Solve for x
    x = 74,203,110.04/8,776.72
  6. Step 6: Final answer
    x = 8,454.54

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1.5x scale

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.