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Finding the Fourth Proportional to 9,211.04, 12,706.80 and 5,672.96

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Solution

The fourth proportional to 9,211.04, 12,706.80 and 5,672.96 is: 7,825.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,211.04 : 12,706.80 = 5,672.96 : x
  2. Step 2: Convert to fraction form
    9,211.04/12,706.80 = 5,672.96/x
  3. Step 3: Cross multiply
    9,211.04x = 12,706.80 × 5,672.96
  4. Step 4: Simplify right side
    9,211.04x = 72,085,168.13
  5. Step 5: Solve for x
    x = 72,085,168.13/9,211.04
  6. Step 6: Final answer
    x = 7,825.95

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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.