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Finding the Fourth Proportional to 5,830.60, 8,745.90 and 5,611.90

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Solution

The fourth proportional to 5,830.60, 8,745.90 and 5,611.90 is: 8,417.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,830.60 : 8,745.90 = 5,611.90 : x
  2. Step 2: Convert to fraction form
    5,830.60/8,745.90 = 5,611.90/x
  3. Step 3: Cross multiply
    5,830.60x = 8,745.90 × 5,611.90
  4. Step 4: Simplify right side
    5,830.60x = 49,081,116.21
  5. Step 5: Solve for x
    x = 49,081,116.21/5,830.60
  6. Step 6: Final answer
    x = 8,417.85

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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.