Home / 1,254.79-1,871.94-1,238.39

Finding the Fourth Proportional to 1,254.79, 1,871.94 and 1,238.39

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Solution

The fourth proportional to 1,254.79, 1,871.94 and 1,238.39 is: 1,847.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.79 : 1,871.94 = 1,238.39 : x
  2. Step 2: Convert to fraction form
    1,254.79/1,871.94 = 1,238.39/x
  3. Step 3: Cross multiply
    1,254.79x = 1,871.94 × 1,238.39
  4. Step 4: Simplify right side
    1,254.79x = 2,318,183.63
  5. Step 5: Solve for x
    x = 2,318,183.63/1,254.79
  6. Step 6: Final answer
    x = 1,847.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.