Home / 1,220.26-1,829.31-1,123.06

Finding the Fourth Proportional to 1,220.26, 1,829.31 and 1,123.06

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Solution

The fourth proportional to 1,220.26, 1,829.31 and 1,123.06 is: 1,683.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.26 : 1,829.31 = 1,123.06 : x
  2. Step 2: Convert to fraction form
    1,220.26/1,829.31 = 1,123.06/x
  3. Step 3: Cross multiply
    1,220.26x = 1,829.31 × 1,123.06
  4. Step 4: Simplify right side
    1,220.26x = 2,054,424.89
  5. Step 5: Solve for x
    x = 2,054,424.89/1,220.26
  6. Step 6: Final answer
    x = 1,683.60

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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.