Home / 8,736.40-13,110-3,542.32

Finding the Fourth Proportional to 8,736.40, 13,110 and 3,542.32

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Solution

The fourth proportional to 8,736.40, 13,110 and 3,542.32 is: 5,315.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,736.40 : 13,110 = 3,542.32 : x
  2. Step 2: Convert to fraction form
    8,736.40/13,110 = 3,542.32/x
  3. Step 3: Cross multiply
    8,736.40x = 13,110 × 3,542.32
  4. Step 4: Simplify right side
    8,736.40x = 46,439,815.20
  5. Step 5: Solve for x
    x = 46,439,815.20/8,736.40
  6. Step 6: Final answer
    x = 5,315.67

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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.