Home / 3,281.56-4,892.48-2,912.20

Finding the Fourth Proportional to 3,281.56, 4,892.48 and 2,912.20

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Solution

The fourth proportional to 3,281.56, 4,892.48 and 2,912.20 is: 4,341.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.56 : 4,892.48 = 2,912.20 : x
  2. Step 2: Convert to fraction form
    3,281.56/4,892.48 = 2,912.20/x
  3. Step 3: Cross multiply
    3,281.56x = 4,892.48 × 2,912.20
  4. Step 4: Simplify right side
    3,281.56x = 14,247,880.26
  5. Step 5: Solve for x
    x = 14,247,880.26/3,281.56
  6. Step 6: Final answer
    x = 4,341.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.