Home / 8,426.66-12,639.82-3,745.40

Finding the Fourth Proportional to 8,426.66, 12,639.82 and 3,745.40

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Solution

The fourth proportional to 8,426.66, 12,639.82 and 3,745.40 is: 5,618.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,426.66 : 12,639.82 = 3,745.40 : x
  2. Step 2: Convert to fraction form
    8,426.66/12,639.82 = 3,745.40/x
  3. Step 3: Cross multiply
    8,426.66x = 12,639.82 × 3,745.40
  4. Step 4: Simplify right side
    8,426.66x = 47,341,181.83
  5. Step 5: Solve for x
    x = 47,341,181.83/8,426.66
  6. Step 6: Final answer
    x = 5,618.02

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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.