Home / 2,775.28-4,163.76-1,214.55

Finding the Fourth Proportional to 2,775.28, 4,163.76 and 1,214.55

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Solution

The fourth proportional to 2,775.28, 4,163.76 and 1,214.55 is: 1,822.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.28 : 4,163.76 = 1,214.55 : x
  2. Step 2: Convert to fraction form
    2,775.28/4,163.76 = 1,214.55/x
  3. Step 3: Cross multiply
    2,775.28x = 4,163.76 × 1,214.55
  4. Step 4: Simplify right side
    2,775.28x = 5,057,094.71
  5. Step 5: Solve for x
    x = 5,057,094.71/2,775.28
  6. Step 6: Final answer
    x = 1,822.19

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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.