Home / 8,379.20-12,552.60-4,912.40

Finding the Fourth Proportional to 8,379.20, 12,552.60 and 4,912.40

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Solution

The fourth proportional to 8,379.20, 12,552.60 and 4,912.40 is: 7,359.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.20 : 12,552.60 = 4,912.40 : x
  2. Step 2: Convert to fraction form
    8,379.20/12,552.60 = 4,912.40/x
  3. Step 3: Cross multiply
    8,379.20x = 12,552.60 × 4,912.40
  4. Step 4: Simplify right side
    8,379.20x = 61,663,392.24
  5. Step 5: Solve for x
    x = 61,663,392.24/8,379.20
  6. Step 6: Final answer
    x = 7,359.10

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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.