Home / 1,905.81-2,629.42-1,066.40

Finding the Fourth Proportional to 1,905.81, 2,629.42 and 1,066.40

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Solution

The fourth proportional to 1,905.81, 2,629.42 and 1,066.40 is: 1,471.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.81 : 2,629.42 = 1,066.40 : x
  2. Step 2: Convert to fraction form
    1,905.81/2,629.42 = 1,066.40/x
  3. Step 3: Cross multiply
    1,905.81x = 2,629.42 × 1,066.40
  4. Step 4: Simplify right side
    1,905.81x = 2,804,013.49
  5. Step 5: Solve for x
    x = 2,804,013.49/1,905.81
  6. Step 6: Final answer
    x = 1,471.30

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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.