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Finding the Fourth Proportional to 8,567.57, 11,822.79 and 4,790.90

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Solution

The fourth proportional to 8,567.57, 11,822.79 and 4,790.90 is: 6,611.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,567.57 : 11,822.79 = 4,790.90 : x
  2. Step 2: Convert to fraction form
    8,567.57/11,822.79 = 4,790.90/x
  3. Step 3: Cross multiply
    8,567.57x = 11,822.79 × 4,790.90
  4. Step 4: Simplify right side
    8,567.57x = 56,641,745.21
  5. Step 5: Solve for x
    x = 56,641,745.21/8,567.57
  6. Step 6: Final answer
    x = 6,611.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.