Home / 2,840.10-3,920.73-1,896.45

Finding the Fourth Proportional to 2,840.10, 3,920.73 and 1,896.45

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Solution

The fourth proportional to 2,840.10, 3,920.73 and 1,896.45 is: 2,618.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.10 : 3,920.73 = 1,896.45 : x
  2. Step 2: Convert to fraction form
    2,840.10/3,920.73 = 1,896.45/x
  3. Step 3: Cross multiply
    2,840.10x = 3,920.73 × 1,896.45
  4. Step 4: Simplify right side
    2,840.10x = 7,435,468.41
  5. Step 5: Solve for x
    x = 7,435,468.41/2,840.10
  6. Step 6: Final answer
    x = 2,618.03

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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.