Home / 1,961.60-2,706.56-1,122.16

Finding the Fourth Proportional to 1,961.60, 2,706.56 and 1,122.16

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Solution

The fourth proportional to 1,961.60, 2,706.56 and 1,122.16 is: 1,548.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.60 : 2,706.56 = 1,122.16 : x
  2. Step 2: Convert to fraction form
    1,961.60/2,706.56 = 1,122.16/x
  3. Step 3: Cross multiply
    1,961.60x = 2,706.56 × 1,122.16
  4. Step 4: Simplify right side
    1,961.60x = 3,037,193.37
  5. Step 5: Solve for x
    x = 3,037,193.37/1,961.60
  6. Step 6: Final answer
    x = 1,548.32

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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.