Home / 6,623.56-9,140.28-3,639.40

Finding the Fourth Proportional to 6,623.56, 9,140.28 and 3,639.40

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Solution

The fourth proportional to 6,623.56, 9,140.28 and 3,639.40 is: 5,022.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,623.56 : 9,140.28 = 3,639.40 : x
  2. Step 2: Convert to fraction form
    6,623.56/9,140.28 = 3,639.40/x
  3. Step 3: Cross multiply
    6,623.56x = 9,140.28 × 3,639.40
  4. Step 4: Simplify right side
    6,623.56x = 33,265,135.03
  5. Step 5: Solve for x
    x = 33,265,135.03/6,623.56
  6. Step 6: Final answer
    x = 5,022.24

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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.