Home / 2,075.85-3,113.77-1,209.55

Finding the Fourth Proportional to 2,075.85, 3,113.77 and 1,209.55

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Solution

The fourth proportional to 2,075.85, 3,113.77 and 1,209.55 is: 1,814.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,075.85 : 3,113.77 = 1,209.55 : x
  2. Step 2: Convert to fraction form
    2,075.85/3,113.77 = 1,209.55/x
  3. Step 3: Cross multiply
    2,075.85x = 3,113.77 × 1,209.55
  4. Step 4: Simplify right side
    2,075.85x = 3,766,260.50
  5. Step 5: Solve for x
    x = 3,766,260.50/2,075.85
  6. Step 6: Final answer
    x = 1,814.32

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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.