Home / 8,347.20-11,518.36-4,989.36

Finding the Fourth Proportional to 8,347.20, 11,518.36 and 4,989.36

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Solution

The fourth proportional to 8,347.20, 11,518.36 and 4,989.36 is: 6,884.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,347.20 : 11,518.36 = 4,989.36 : x
  2. Step 2: Convert to fraction form
    8,347.20/11,518.36 = 4,989.36/x
  3. Step 3: Cross multiply
    8,347.20x = 11,518.36 × 4,989.36
  4. Step 4: Simplify right side
    8,347.20x = 57,469,244.65
  5. Step 5: Solve for x
    x = 57,469,244.65/8,347.20
  6. Step 6: Final answer
    x = 6,884.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.