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Finding the Fourth Proportional to 8,908.32, 13,379.76 and 7,369.68

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Solution

The fourth proportional to 8,908.32, 13,379.76 and 7,369.68 is: 11,068.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.32 : 13,379.76 = 7,369.68 : x
  2. Step 2: Convert to fraction form
    8,908.32/13,379.76 = 7,369.68/x
  3. Step 3: Cross multiply
    8,908.32x = 13,379.76 × 7,369.68
  4. Step 4: Simplify right side
    8,908.32x = 98,604,549.68
  5. Step 5: Solve for x
    x = 98,604,549.68/8,908.32
  6. Step 6: Final answer
    x = 11,068.82

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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.