Home / 6,623.76-9,140.91-3,639.90

Finding the Fourth Proportional to 6,623.76, 9,140.91 and 3,639.90

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Solution

The fourth proportional to 6,623.76, 9,140.91 and 3,639.90 is: 5,023.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,623.76 : 9,140.91 = 3,639.90 : x
  2. Step 2: Convert to fraction form
    6,623.76/9,140.91 = 3,639.90/x
  3. Step 3: Cross multiply
    6,623.76x = 9,140.91 × 3,639.90
  4. Step 4: Simplify right side
    6,623.76x = 33,271,998.31
  5. Step 5: Solve for x
    x = 33,271,998.31/6,623.76
  6. Step 6: Final answer
    x = 5,023.13

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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.