Home / 8,618.85-12,929.55-4,236.60

Finding the Fourth Proportional to 8,618.85, 12,929.55 and 4,236.60

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Solution

The fourth proportional to 8,618.85, 12,929.55 and 4,236.60 is: 6,355.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.85 : 12,929.55 = 4,236.60 : x
  2. Step 2: Convert to fraction form
    8,618.85/12,929.55 = 4,236.60/x
  3. Step 3: Cross multiply
    8,618.85x = 12,929.55 × 4,236.60
  4. Step 4: Simplify right side
    8,618.85x = 54,777,331.53
  5. Step 5: Solve for x
    x = 54,777,331.53/8,618.85
  6. Step 6: Final answer
    x = 6,355.53

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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.