Home / 6,623.10-9,140.03-3,638.75

Finding the Fourth Proportional to 6,623.10, 9,140.03 and 3,638.75

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Solution

The fourth proportional to 6,623.10, 9,140.03 and 3,638.75 is: 5,021.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,623.10 : 9,140.03 = 3,638.75 : x
  2. Step 2: Convert to fraction form
    6,623.10/9,140.03 = 3,638.75/x
  3. Step 3: Cross multiply
    6,623.10x = 9,140.03 × 3,638.75
  4. Step 4: Simplify right side
    6,623.10x = 33,258,233.91
  5. Step 5: Solve for x
    x = 33,258,233.91/6,623.10
  6. Step 6: Final answer
    x = 5,021.55

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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.