Home / 1,905.36-2,628.72-1,077.36

Finding the Fourth Proportional to 1,905.36, 2,628.72 and 1,077.36

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Solution

The fourth proportional to 1,905.36, 2,628.72 and 1,077.36 is: 1,486.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.36 : 2,628.72 = 1,077.36 : x
  2. Step 2: Convert to fraction form
    1,905.36/2,628.72 = 1,077.36/x
  3. Step 3: Cross multiply
    1,905.36x = 2,628.72 × 1,077.36
  4. Step 4: Simplify right side
    1,905.36x = 2,832,077.78
  5. Step 5: Solve for x
    x = 2,832,077.78/1,905.36
  6. Step 6: Final answer
    x = 1,486.37

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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.