Home / 2,813.88-4,214.34-1,948.80

Finding the Fourth Proportional to 2,813.88, 4,214.34 and 1,948.80

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Solution

The fourth proportional to 2,813.88, 4,214.34 and 1,948.80 is: 2,918.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.88 : 4,214.34 = 1,948.80 : x
  2. Step 2: Convert to fraction form
    2,813.88/4,214.34 = 1,948.80/x
  3. Step 3: Cross multiply
    2,813.88x = 4,214.34 × 1,948.80
  4. Step 4: Simplify right side
    2,813.88x = 8,212,905.79
  5. Step 5: Solve for x
    x = 8,212,905.79/2,813.88
  6. Step 6: Final answer
    x = 2,918.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.