Home / 2,558.72-3,531.14-1,439.70

Finding the Fourth Proportional to 2,558.72, 3,531.14 and 1,439.70

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Solution

The fourth proportional to 2,558.72, 3,531.14 and 1,439.70 is: 1,986.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,558.72 : 3,531.14 = 1,439.70 : x
  2. Step 2: Convert to fraction form
    2,558.72/3,531.14 = 1,439.70/x
  3. Step 3: Cross multiply
    2,558.72x = 3,531.14 × 1,439.70
  4. Step 4: Simplify right side
    2,558.72x = 5,083,775.06
  5. Step 5: Solve for x
    x = 5,083,775.06/2,558.72
  6. Step 6: Final answer
    x = 1,986.85

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1.5x scale

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.