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Finding the Fourth Proportional to 7,826.84, 11,745.36 and 3,388.84

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Solution

The fourth proportional to 7,826.84, 11,745.36 and 3,388.84 is: 5,085.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,826.84 : 11,745.36 = 3,388.84 : x
  2. Step 2: Convert to fraction form
    7,826.84/11,745.36 = 3,388.84/x
  3. Step 3: Cross multiply
    7,826.84x = 11,745.36 × 3,388.84
  4. Step 4: Simplify right side
    7,826.84x = 39,803,182.41
  5. Step 5: Solve for x
    x = 39,803,182.41/7,826.84
  6. Step 6: Final answer
    x = 5,085.47

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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.