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Finding the Fourth Proportional to 28,683.40, 43,025.10 and 7,906.90

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Solution

The fourth proportional to 28,683.40, 43,025.10 and 7,906.90 is: 11,860.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,683.40 : 43,025.10 = 7,906.90 : x
  2. Step 2: Convert to fraction form
    28,683.40/43,025.10 = 7,906.90/x
  3. Step 3: Cross multiply
    28,683.40x = 43,025.10 × 7,906.90
  4. Step 4: Simplify right side
    28,683.40x = 340,195,163.19
  5. Step 5: Solve for x
    x = 340,195,163.19/28,683.40
  6. Step 6: Final answer
    x = 11,860.35

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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.