Home / 2,878.48-3,971.66-1,698.92

Finding the Fourth Proportional to 2,878.48, 3,971.66 and 1,698.92

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Solution

The fourth proportional to 2,878.48, 3,971.66 and 1,698.92 is: 2,344.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.48 : 3,971.66 = 1,698.92 : x
  2. Step 2: Convert to fraction form
    2,878.48/3,971.66 = 1,698.92/x
  3. Step 3: Cross multiply
    2,878.48x = 3,971.66 × 1,698.92
  4. Step 4: Simplify right side
    2,878.48x = 6,747,504.25
  5. Step 5: Solve for x
    x = 6,747,504.25/2,878.48
  6. Step 6: Final answer
    x = 2,344.12

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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.