Home / 2,540.18-3,810.48-808.80

Finding the Fourth Proportional to 2,540.18, 3,810.48 and 808.80

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Solution

The fourth proportional to 2,540.18, 3,810.48 and 808.80 is: 1,213.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.18 : 3,810.48 = 808.80 : x
  2. Step 2: Convert to fraction form
    2,540.18/3,810.48 = 808.80/x
  3. Step 3: Cross multiply
    2,540.18x = 3,810.48 × 808.80
  4. Step 4: Simplify right side
    2,540.18x = 3,081,916.22
  5. Step 5: Solve for x
    x = 3,081,916.22/2,540.18
  6. Step 6: Final answer
    x = 1,213.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.