Home / 1,905.82-2,629.20-1,346.20

Finding the Fourth Proportional to 1,905.82, 2,629.20 and 1,346.20

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Solution

The fourth proportional to 1,905.82, 2,629.20 and 1,346.20 is: 1,857.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.82 : 2,629.20 = 1,346.20 : x
  2. Step 2: Convert to fraction form
    1,905.82/2,629.20 = 1,346.20/x
  3. Step 3: Cross multiply
    1,905.82x = 2,629.20 × 1,346.20
  4. Step 4: Simplify right side
    1,905.82x = 3,539,429.04
  5. Step 5: Solve for x
    x = 3,539,429.04/1,905.82
  6. Step 6: Final answer
    x = 1,857.17

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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.