Home / 6,623.74-9,140.78-3,639.63

Finding the Fourth Proportional to 6,623.74, 9,140.78 and 3,639.63

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Solution

The fourth proportional to 6,623.74, 9,140.78 and 3,639.63 is: 5,022.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,623.74 : 9,140.78 = 3,639.63 : x
  2. Step 2: Convert to fraction form
    6,623.74/9,140.78 = 3,639.63/x
  3. Step 3: Cross multiply
    6,623.74x = 9,140.78 × 3,639.63
  4. Step 4: Simplify right side
    6,623.74x = 33,269,057.11
  5. Step 5: Solve for x
    x = 33,269,057.11/6,623.74
  6. Step 6: Final answer
    x = 5,022.70

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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.