Home / 2,838.85-3,918.99-1,895.20

Finding the Fourth Proportional to 2,838.85, 3,918.99 and 1,895.20

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Solution

The fourth proportional to 2,838.85, 3,918.99 and 1,895.20 is: 2,616.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.85 : 3,918.99 = 1,895.20 : x
  2. Step 2: Convert to fraction form
    2,838.85/3,918.99 = 1,895.20/x
  3. Step 3: Cross multiply
    2,838.85x = 3,918.99 × 1,895.20
  4. Step 4: Simplify right side
    2,838.85x = 7,427,269.85
  5. Step 5: Solve for x
    x = 7,427,269.85/2,838.85
  6. Step 6: Final answer
    x = 2,616.30

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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.