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Finding the Fourth Proportional to 9,679.60, 14,519.24 and 4,207.60

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Solution

The fourth proportional to 9,679.60, 14,519.24 and 4,207.60 is: 6,311.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,679.60 : 14,519.24 = 4,207.60 : x
  2. Step 2: Convert to fraction form
    9,679.60/14,519.24 = 4,207.60/x
  3. Step 3: Cross multiply
    9,679.60x = 14,519.24 × 4,207.60
  4. Step 4: Simplify right side
    9,679.60x = 61,091,154.22
  5. Step 5: Solve for x
    x = 61,091,154.22/9,679.60
  6. Step 6: Final answer
    x = 6,311.33

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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.