Home / 2,839.57-3,918.13-1,777.21

Finding the Fourth Proportional to 2,839.57, 3,918.13 and 1,777.21

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Solution

The fourth proportional to 2,839.57, 3,918.13 and 1,777.21 is: 2,452.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.57 : 3,918.13 = 1,777.21 : x
  2. Step 2: Convert to fraction form
    2,839.57/3,918.13 = 1,777.21/x
  3. Step 3: Cross multiply
    2,839.57x = 3,918.13 × 1,777.21
  4. Step 4: Simplify right side
    2,839.57x = 6,963,330.93
  5. Step 5: Solve for x
    x = 6,963,330.93/2,839.57
  6. Step 6: Final answer
    x = 2,452.25

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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.