Home / 5,266.78-7,900.63-2,147.01

Finding the Fourth Proportional to 5,266.78, 7,900.63 and 2,147.01

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Solution

The fourth proportional to 5,266.78, 7,900.63 and 2,147.01 is: 3,220.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,266.78 : 7,900.63 = 2,147.01 : x
  2. Step 2: Convert to fraction form
    5,266.78/7,900.63 = 2,147.01/x
  3. Step 3: Cross multiply
    5,266.78x = 7,900.63 × 2,147.01
  4. Step 4: Simplify right side
    5,266.78x = 16,962,724.88
  5. Step 5: Solve for x
    x = 16,962,724.88/5,266.78
  6. Step 6: Final answer
    x = 3,220.70

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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.