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Finding the Fourth Proportional to 8,379.48, 11,561.16 and 4,841.40

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Solution

The fourth proportional to 8,379.48, 11,561.16 and 4,841.40 is: 6,679.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.48 : 11,561.16 = 4,841.40 : x
  2. Step 2: Convert to fraction form
    8,379.48/11,561.16 = 4,841.40/x
  3. Step 3: Cross multiply
    8,379.48x = 11,561.16 × 4,841.40
  4. Step 4: Simplify right side
    8,379.48x = 55,972,200.02
  5. Step 5: Solve for x
    x = 55,972,200.02/8,379.48
  6. Step 6: Final answer
    x = 6,679.67

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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.