Home / 2,220.89-3,325.16-1,122.95

Finding the Fourth Proportional to 2,220.89, 3,325.16 and 1,122.95

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Solution

The fourth proportional to 2,220.89, 3,325.16 and 1,122.95 is: 1,681.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.89 : 3,325.16 = 1,122.95 : x
  2. Step 2: Convert to fraction form
    2,220.89/3,325.16 = 1,122.95/x
  3. Step 3: Cross multiply
    2,220.89x = 3,325.16 × 1,122.95
  4. Step 4: Simplify right side
    2,220.89x = 3,733,999.54
  5. Step 5: Solve for x
    x = 3,733,999.54/2,220.89
  6. Step 6: Final answer
    x = 1,681.31

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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.