Home / 2,116.90-3,176.26-818.07

Finding the Fourth Proportional to 2,116.90, 3,176.26 and 818.07

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Solution

The fourth proportional to 2,116.90, 3,176.26 and 818.07 is: 1,227.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.90 : 3,176.26 = 818.07 : x
  2. Step 2: Convert to fraction form
    2,116.90/3,176.26 = 818.07/x
  3. Step 3: Cross multiply
    2,116.90x = 3,176.26 × 818.07
  4. Step 4: Simplify right side
    2,116.90x = 2,598,403.02
  5. Step 5: Solve for x
    x = 2,598,403.02/2,116.90
  6. Step 6: Final answer
    x = 1,227.46

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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.