Home / 2,816.90-3,888.68-1,874.26

Finding the Fourth Proportional to 2,816.90, 3,888.68 and 1,874.26

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Solution

The fourth proportional to 2,816.90, 3,888.68 and 1,874.26 is: 2,587.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.90 : 3,888.68 = 1,874.26 : x
  2. Step 2: Convert to fraction form
    2,816.90/3,888.68 = 1,874.26/x
  3. Step 3: Cross multiply
    2,816.90x = 3,888.68 × 1,874.26
  4. Step 4: Simplify right side
    2,816.90x = 7,288,419.62
  5. Step 5: Solve for x
    x = 7,288,419.62/2,816.90
  6. Step 6: Final answer
    x = 2,587.39

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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.