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Finding the Fourth Proportional to 4,886.50, 7,329.90 and 1,766.80

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Solution

The fourth proportional to 4,886.50, 7,329.90 and 1,766.80 is: 2,650.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,886.50 : 7,329.90 = 1,766.80 : x
  2. Step 2: Convert to fraction form
    4,886.50/7,329.90 = 1,766.80/x
  3. Step 3: Cross multiply
    4,886.50x = 7,329.90 × 1,766.80
  4. Step 4: Simplify right side
    4,886.50x = 12,950,467.32
  5. Step 5: Solve for x
    x = 12,950,467.32/4,886.50
  6. Step 6: Final answer
    x = 2,650.25

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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.