Home / 2,558.70-3,531-1,439.64

Finding the Fourth Proportional to 2,558.70, 3,531 and 1,439.64

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Solution

The fourth proportional to 2,558.70, 3,531 and 1,439.64 is: 1,986.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,558.70 : 3,531 = 1,439.64 : x
  2. Step 2: Convert to fraction form
    2,558.70/3,531 = 1,439.64/x
  3. Step 3: Cross multiply
    2,558.70x = 3,531 × 1,439.64
  4. Step 4: Simplify right side
    2,558.70x = 5,083,368.84
  5. Step 5: Solve for x
    x = 5,083,368.84/2,558.70
  6. Step 6: Final answer
    x = 1,986.70

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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.