Home / 2,227.68-3,075.66-1,389.60

Finding the Fourth Proportional to 2,227.68, 3,075.66 and 1,389.60

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Solution

The fourth proportional to 2,227.68, 3,075.66 and 1,389.60 is: 1,918.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,227.68 : 3,075.66 = 1,389.60 : x
  2. Step 2: Convert to fraction form
    2,227.68/3,075.66 = 1,389.60/x
  3. Step 3: Cross multiply
    2,227.68x = 3,075.66 × 1,389.60
  4. Step 4: Simplify right side
    2,227.68x = 4,273,937.14
  5. Step 5: Solve for x
    x = 4,273,937.14/2,227.68
  6. Step 6: Final answer
    x = 1,918.56

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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.