Home / 8,488.60-12,729.85-2,940.45

Finding the Fourth Proportional to 8,488.60, 12,729.85 and 2,940.45

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Solution

The fourth proportional to 8,488.60, 12,729.85 and 2,940.45 is: 4,409.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,488.60 : 12,729.85 = 2,940.45 : x
  2. Step 2: Convert to fraction form
    8,488.60/12,729.85 = 2,940.45/x
  3. Step 3: Cross multiply
    8,488.60x = 12,729.85 × 2,940.45
  4. Step 4: Simplify right side
    8,488.60x = 37,431,487.43
  5. Step 5: Solve for x
    x = 37,431,487.43/8,488.60
  6. Step 6: Final answer
    x = 4,409.62

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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.