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Finding the Fourth Proportional to 7,059.06, 9,721.17 and 6,912.18

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Solution

The fourth proportional to 7,059.06, 9,721.17 and 6,912.18 is: 9,518.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,059.06 : 9,721.17 = 6,912.18 : x
  2. Step 2: Convert to fraction form
    7,059.06/9,721.17 = 6,912.18/x
  3. Step 3: Cross multiply
    7,059.06x = 9,721.17 × 6,912.18
  4. Step 4: Simplify right side
    7,059.06x = 67,194,476.85
  5. Step 5: Solve for x
    x = 67,194,476.85/7,059.06
  6. Step 6: Final answer
    x = 9,518.90

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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.