Home / 2,140.83-2,954.97-1,355.33

Finding the Fourth Proportional to 2,140.83, 2,954.97 and 1,355.33

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Solution

The fourth proportional to 2,140.83, 2,954.97 and 1,355.33 is: 1,870.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.83 : 2,954.97 = 1,355.33 : x
  2. Step 2: Convert to fraction form
    2,140.83/2,954.97 = 1,355.33/x
  3. Step 3: Cross multiply
    2,140.83x = 2,954.97 × 1,355.33
  4. Step 4: Simplify right side
    2,140.83x = 4,004,937.94
  5. Step 5: Solve for x
    x = 4,004,937.94/2,140.83
  6. Step 6: Final answer
    x = 1,870.75

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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.