Home / 1,780.35-2,683.86-1,661.42

Finding the Fourth Proportional to 1,780.35, 2,683.86 and 1,661.42

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Solution

The fourth proportional to 1,780.35, 2,683.86 and 1,661.42 is: 2,504.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.35 : 2,683.86 = 1,661.42 : x
  2. Step 2: Convert to fraction form
    1,780.35/2,683.86 = 1,661.42/x
  3. Step 3: Cross multiply
    1,780.35x = 2,683.86 × 1,661.42
  4. Step 4: Simplify right side
    1,780.35x = 4,459,005.26
  5. Step 5: Solve for x
    x = 4,459,005.26/1,780.35
  6. Step 6: Final answer
    x = 2,504.57

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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.