Home / 6,623.42-9,140.29-3,639.38

Finding the Fourth Proportional to 6,623.42, 9,140.29 and 3,639.38

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Solution

The fourth proportional to 6,623.42, 9,140.29 and 3,639.38 is: 5,022.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,623.42 : 9,140.29 = 3,639.38 : x
  2. Step 2: Convert to fraction form
    6,623.42/9,140.29 = 3,639.38/x
  3. Step 3: Cross multiply
    6,623.42x = 9,140.29 × 3,639.38
  4. Step 4: Simplify right side
    6,623.42x = 33,265,005.71
  5. Step 5: Solve for x
    x = 33,265,005.71/6,623.42
  6. Step 6: Final answer
    x = 5,022.33

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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.