Home / 1,331.76-2,007.44-1,220.84

Finding the Fourth Proportional to 1,331.76, 2,007.44 and 1,220.84

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Solution

The fourth proportional to 1,331.76, 2,007.44 and 1,220.84 is: 1,840.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.76 : 2,007.44 = 1,220.84 : x
  2. Step 2: Convert to fraction form
    1,331.76/2,007.44 = 1,220.84/x
  3. Step 3: Cross multiply
    1,331.76x = 2,007.44 × 1,220.84
  4. Step 4: Simplify right side
    1,331.76x = 2,450,763.05
  5. Step 5: Solve for x
    x = 2,450,763.05/1,331.76
  6. Step 6: Final answer
    x = 1,840.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.