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Finding the Fourth Proportional to 7,098.93, 10,639.17 and 3,808.18

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Solution

The fourth proportional to 7,098.93, 10,639.17 and 3,808.18 is: 5,707.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,098.93 : 10,639.17 = 3,808.18 : x
  2. Step 2: Convert to fraction form
    7,098.93/10,639.17 = 3,808.18/x
  3. Step 3: Cross multiply
    7,098.93x = 10,639.17 × 3,808.18
  4. Step 4: Simplify right side
    7,098.93x = 40,515,847.81
  5. Step 5: Solve for x
    x = 40,515,847.81/7,098.93
  6. Step 6: Final answer
    x = 5,707.32

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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.