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Finding the Fourth Proportional to 8,379.76, 12,572.57 and 5,256.07

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Solution

The fourth proportional to 8,379.76, 12,572.57 and 5,256.07 is: 7,885.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.76 : 12,572.57 = 5,256.07 : x
  2. Step 2: Convert to fraction form
    8,379.76/12,572.57 = 5,256.07/x
  3. Step 3: Cross multiply
    8,379.76x = 12,572.57 × 5,256.07
  4. Step 4: Simplify right side
    8,379.76x = 66,082,308.00
  5. Step 5: Solve for x
    x = 66,082,308.00/8,379.76
  6. Step 6: Final answer
    x = 7,885.94

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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.