Home / 1,128.07-1,692.38-607.84

Finding the Fourth Proportional to 1,128.07, 1,692.38 and 607.84

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Solution

The fourth proportional to 1,128.07, 1,692.38 and 607.84 is: 911.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128.07 : 1,692.38 = 607.84 : x
  2. Step 2: Convert to fraction form
    1,128.07/1,692.38 = 607.84/x
  3. Step 3: Cross multiply
    1,128.07x = 1,692.38 × 607.84
  4. Step 4: Simplify right side
    1,128.07x = 1,028,696.26
  5. Step 5: Solve for x
    x = 1,028,696.26/1,128.07
  6. Step 6: Final answer
    x = 911.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.