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Finding the Fourth Proportional to 8,960.72, 13,442.02 and 4,279.94

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Solution

The fourth proportional to 8,960.72, 13,442.02 and 4,279.94 is: 6,420.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,960.72 : 13,442.02 = 4,279.94 : x
  2. Step 2: Convert to fraction form
    8,960.72/13,442.02 = 4,279.94/x
  3. Step 3: Cross multiply
    8,960.72x = 13,442.02 × 4,279.94
  4. Step 4: Simplify right side
    8,960.72x = 57,531,039.08
  5. Step 5: Solve for x
    x = 57,531,039.08/8,960.72
  6. Step 6: Final answer
    x = 6,420.36

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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.