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Finding the Fourth Proportional to 8,745.30, 12,068.57 and 4,766.40

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Solution

The fourth proportional to 8,745.30, 12,068.57 and 4,766.40 is: 6,577.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.30 : 12,068.57 = 4,766.40 : x
  2. Step 2: Convert to fraction form
    8,745.30/12,068.57 = 4,766.40/x
  3. Step 3: Cross multiply
    8,745.30x = 12,068.57 × 4,766.40
  4. Step 4: Simplify right side
    8,745.30x = 57,523,643.96
  5. Step 5: Solve for x
    x = 57,523,643.96/8,745.30
  6. Step 6: Final answer
    x = 6,577.66

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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.