Home / 1,091.40-1,628.44-1,013.98

Finding the Fourth Proportional to 1,091.40, 1,628.44 and 1,013.98

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Solution

The fourth proportional to 1,091.40, 1,628.44 and 1,013.98 is: 1,512.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091.40 : 1,628.44 = 1,013.98 : x
  2. Step 2: Convert to fraction form
    1,091.40/1,628.44 = 1,013.98/x
  3. Step 3: Cross multiply
    1,091.40x = 1,628.44 × 1,013.98
  4. Step 4: Simplify right side
    1,091.40x = 1,651,198.99
  5. Step 5: Solve for x
    x = 1,651,198.99/1,091.40
  6. Step 6: Final answer
    x = 1,512.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.