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Finding the Fourth Proportional to 8,879.70, 13,319.55 and 4,983.60

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Solution

The fourth proportional to 8,879.70, 13,319.55 and 4,983.60 is: 7,475.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.70 : 13,319.55 = 4,983.60 : x
  2. Step 2: Convert to fraction form
    8,879.70/13,319.55 = 4,983.60/x
  3. Step 3: Cross multiply
    8,879.70x = 13,319.55 × 4,983.60
  4. Step 4: Simplify right side
    8,879.70x = 66,379,309.38
  5. Step 5: Solve for x
    x = 66,379,309.38/8,879.70
  6. Step 6: Final answer
    x = 7,475.40

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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.