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Finding the Fourth Proportional to 9,672.22, 13,347.21 and 5,479.66

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Solution

The fourth proportional to 9,672.22, 13,347.21 and 5,479.66 is: 7,561.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,672.22 : 13,347.21 = 5,479.66 : x
  2. Step 2: Convert to fraction form
    9,672.22/13,347.21 = 5,479.66/x
  3. Step 3: Cross multiply
    9,672.22x = 13,347.21 × 5,479.66
  4. Step 4: Simplify right side
    9,672.22x = 73,138,172.75
  5. Step 5: Solve for x
    x = 73,138,172.75/9,672.22
  6. Step 6: Final answer
    x = 7,561.67

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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.