Home / 2,557.85-3,529.94-1,438.79

Finding the Fourth Proportional to 2,557.85, 3,529.94 and 1,438.79

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Solution

The fourth proportional to 2,557.85, 3,529.94 and 1,438.79 is: 1,985.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,557.85 : 3,529.94 = 1,438.79 : x
  2. Step 2: Convert to fraction form
    2,557.85/3,529.94 = 1,438.79/x
  3. Step 3: Cross multiply
    2,557.85x = 3,529.94 × 1,438.79
  4. Step 4: Simplify right side
    2,557.85x = 5,078,817.53
  5. Step 5: Solve for x
    x = 5,078,817.53/2,557.85
  6. Step 6: Final answer
    x = 1,985.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.