Home / 1,140.54-1,701.32-1,121.73

Finding the Fourth Proportional to 1,140.54, 1,701.32 and 1,121.73

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Solution

The fourth proportional to 1,140.54, 1,701.32 and 1,121.73 is: 1,673.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140.54 : 1,701.32 = 1,121.73 : x
  2. Step 2: Convert to fraction form
    1,140.54/1,701.32 = 1,121.73/x
  3. Step 3: Cross multiply
    1,140.54x = 1,701.32 × 1,121.73
  4. Step 4: Simplify right side
    1,140.54x = 1,908,416.07
  5. Step 5: Solve for x
    x = 1,908,416.07/1,140.54
  6. Step 6: Final answer
    x = 1,673.26

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.