Home / 1,945.84-2,683.45-1,281.54

Finding the Fourth Proportional to 1,945.84, 2,683.45 and 1,281.54

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Solution

The fourth proportional to 1,945.84, 2,683.45 and 1,281.54 is: 1,767.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.84 : 2,683.45 = 1,281.54 : x
  2. Step 2: Convert to fraction form
    1,945.84/2,683.45 = 1,281.54/x
  3. Step 3: Cross multiply
    1,945.84x = 2,683.45 × 1,281.54
  4. Step 4: Simplify right side
    1,945.84x = 3,438,937.87
  5. Step 5: Solve for x
    x = 3,438,937.87/1,945.84
  6. Step 6: Final answer
    x = 1,767.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.