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Finding the Fourth Proportional to 7,099.92, 10,688.22 and 6,385.50

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Solution

The fourth proportional to 7,099.92, 10,688.22 and 6,385.50 is: 9,612.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,099.92 : 10,688.22 = 6,385.50 : x
  2. Step 2: Convert to fraction form
    7,099.92/10,688.22 = 6,385.50/x
  3. Step 3: Cross multiply
    7,099.92x = 10,688.22 × 6,385.50
  4. Step 4: Simplify right side
    7,099.92x = 68,249,628.81
  5. Step 5: Solve for x
    x = 68,249,628.81/7,099.92
  6. Step 6: Final answer
    x = 9,612.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.