Home / 2,280.21-3,420.18-818.97

Finding the Fourth Proportional to 2,280.21, 3,420.18 and 818.97

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Solution

The fourth proportional to 2,280.21, 3,420.18 and 818.97 is: 1,228.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.21 : 3,420.18 = 818.97 : x
  2. Step 2: Convert to fraction form
    2,280.21/3,420.18 = 818.97/x
  3. Step 3: Cross multiply
    2,280.21x = 3,420.18 × 818.97
  4. Step 4: Simplify right side
    2,280.21x = 2,801,024.81
  5. Step 5: Solve for x
    x = 2,801,024.81/2,280.21
  6. Step 6: Final answer
    x = 1,228.41

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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.