Home / 7,817.78-11,728.74-2,271.64

Finding the Fourth Proportional to 7,817.78, 11,728.74 and 2,271.64

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Solution

The fourth proportional to 7,817.78, 11,728.74 and 2,271.64 is: 3,408.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.78 : 11,728.74 = 2,271.64 : x
  2. Step 2: Convert to fraction form
    7,817.78/11,728.74 = 2,271.64/x
  3. Step 3: Cross multiply
    7,817.78x = 11,728.74 × 2,271.64
  4. Step 4: Simplify right side
    7,817.78x = 26,643,474.93
  5. Step 5: Solve for x
    x = 26,643,474.93/7,817.78
  6. Step 6: Final answer
    x = 3,408.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.