Home / 2,777.16-4,163.68-1,681.28

Finding the Fourth Proportional to 2,777.16, 4,163.68 and 1,681.28

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Solution

The fourth proportional to 2,777.16, 4,163.68 and 1,681.28 is: 2,520.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,777.16 : 4,163.68 = 1,681.28 : x
  2. Step 2: Convert to fraction form
    2,777.16/4,163.68 = 1,681.28/x
  3. Step 3: Cross multiply
    2,777.16x = 4,163.68 × 1,681.28
  4. Step 4: Simplify right side
    2,777.16x = 7,000,318.12
  5. Step 5: Solve for x
    x = 7,000,318.12/2,777.16
  6. Step 6: Final answer
    x = 2,520.68

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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.