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Finding the Fourth Proportional to 2,775.79, 4,163.77 and 1,214.99

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Solution

The fourth proportional to 2,775.79, 4,163.77 and 1,214.99 is: 1,822.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.79 : 4,163.77 = 1,214.99 : x
  2. Step 2: Convert to fraction form
    2,775.79/4,163.77 = 1,214.99/x
  3. Step 3: Cross multiply
    2,775.79x = 4,163.77 × 1,214.99
  4. Step 4: Simplify right side
    2,775.79x = 5,058,938.91
  5. Step 5: Solve for x
    x = 5,058,938.91/2,775.79
  6. Step 6: Final answer
    x = 1,822.52

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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.