Home / 8,623.24-12,905.70-5,338.60

Finding the Fourth Proportional to 8,623.24, 12,905.70 and 5,338.60

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Solution

The fourth proportional to 8,623.24, 12,905.70 and 5,338.60 is: 7,989.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.24 : 12,905.70 = 5,338.60 : x
  2. Step 2: Convert to fraction form
    8,623.24/12,905.70 = 5,338.60/x
  3. Step 3: Cross multiply
    8,623.24x = 12,905.70 × 5,338.60
  4. Step 4: Simplify right side
    8,623.24x = 68,898,370.02
  5. Step 5: Solve for x
    x = 68,898,370.02/8,623.24
  6. Step 6: Final answer
    x = 7,989.85

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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.