Home / 2,813.40-3,881.52-2,027.70

Finding the Fourth Proportional to 2,813.40, 3,881.52 and 2,027.70

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Solution

The fourth proportional to 2,813.40, 3,881.52 and 2,027.70 is: 2,797.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.40 : 3,881.52 = 2,027.70 : x
  2. Step 2: Convert to fraction form
    2,813.40/3,881.52 = 2,027.70/x
  3. Step 3: Cross multiply
    2,813.40x = 3,881.52 × 2,027.70
  4. Step 4: Simplify right side
    2,813.40x = 7,870,558.10
  5. Step 5: Solve for x
    x = 7,870,558.10/2,813.40
  6. Step 6: Final answer
    x = 2,797.53

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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.