Home / 6,623.47-9,140.55-3,639.50

Finding the Fourth Proportional to 6,623.47, 9,140.55 and 3,639.50

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Solution

The fourth proportional to 6,623.47, 9,140.55 and 3,639.50 is: 5,022.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,623.47 : 9,140.55 = 3,639.50 : x
  2. Step 2: Convert to fraction form
    6,623.47/9,140.55 = 3,639.50/x
  3. Step 3: Cross multiply
    6,623.47x = 9,140.55 × 3,639.50
  4. Step 4: Simplify right side
    6,623.47x = 33,267,031.73
  5. Step 5: Solve for x
    x = 33,267,031.73/6,623.47
  6. Step 6: Final answer
    x = 5,022.60

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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.