Home / 2,818.90-3,891.44-1,876.26

Finding the Fourth Proportional to 2,818.90, 3,891.44 and 1,876.26

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Solution

The fourth proportional to 2,818.90, 3,891.44 and 1,876.26 is: 2,590.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.90 : 3,891.44 = 1,876.26 : x
  2. Step 2: Convert to fraction form
    2,818.90/3,891.44 = 1,876.26/x
  3. Step 3: Cross multiply
    2,818.90x = 3,891.44 × 1,876.26
  4. Step 4: Simplify right side
    2,818.90x = 7,301,353.21
  5. Step 5: Solve for x
    x = 7,301,353.21/2,818.90
  6. Step 6: Final answer
    x = 2,590.14

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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.