Home / 2,810.88-4,209.84-1,945.80

Finding the Fourth Proportional to 2,810.88, 4,209.84 and 1,945.80

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Solution

The fourth proportional to 2,810.88, 4,209.84 and 1,945.80 is: 2,914.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.88 : 4,209.84 = 1,945.80 : x
  2. Step 2: Convert to fraction form
    2,810.88/4,209.84 = 1,945.80/x
  3. Step 3: Cross multiply
    2,810.88x = 4,209.84 × 1,945.80
  4. Step 4: Simplify right side
    2,810.88x = 8,191,506.67
  5. Step 5: Solve for x
    x = 8,191,506.67/2,810.88
  6. Step 6: Final answer
    x = 2,914.21

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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.