Home / 1,480.55-2,220.82-1,238.76

Finding the Fourth Proportional to 1,480.55, 2,220.82 and 1,238.76

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Solution

The fourth proportional to 1,480.55, 2,220.82 and 1,238.76 is: 1,858.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.55 : 2,220.82 = 1,238.76 : x
  2. Step 2: Convert to fraction form
    1,480.55/2,220.82 = 1,238.76/x
  3. Step 3: Cross multiply
    1,480.55x = 2,220.82 × 1,238.76
  4. Step 4: Simplify right side
    1,480.55x = 2,751,059.89
  5. Step 5: Solve for x
    x = 2,751,059.89/1,480.55
  6. Step 6: Final answer
    x = 1,858.14

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1.5x scale

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.