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Finding the Fourth Proportional to 6,626.99, 9,145.46 and 3,642.89

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Solution

The fourth proportional to 6,626.99, 9,145.46 and 3,642.89 is: 5,027.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,626.99 : 9,145.46 = 3,642.89 : x
  2. Step 2: Convert to fraction form
    6,626.99/9,145.46 = 3,642.89/x
  3. Step 3: Cross multiply
    6,626.99x = 9,145.46 × 3,642.89
  4. Step 4: Simplify right side
    6,626.99x = 33,315,868.16
  5. Step 5: Solve for x
    x = 33,315,868.16/6,626.99
  6. Step 6: Final answer
    x = 5,027.30

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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.