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Finding the Fourth Proportional to 6,908.60, 10,350.70 and 6,680.20

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Solution

The fourth proportional to 6,908.60, 10,350.70 and 6,680.20 is: 10,008.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,908.60 : 10,350.70 = 6,680.20 : x
  2. Step 2: Convert to fraction form
    6,908.60/10,350.70 = 6,680.20/x
  3. Step 3: Cross multiply
    6,908.60x = 10,350.70 × 6,680.20
  4. Step 4: Simplify right side
    6,908.60x = 69,144,746.14
  5. Step 5: Solve for x
    x = 69,144,746.14/6,908.60
  6. Step 6: Final answer
    x = 10,008.50

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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.