Home / 3,420.75-5,129.08-1,662.30

Finding the Fourth Proportional to 3,420.75, 5,129.08 and 1,662.30

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Solution

The fourth proportional to 3,420.75, 5,129.08 and 1,662.30 is: 2,492.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.75 : 5,129.08 = 1,662.30 : x
  2. Step 2: Convert to fraction form
    3,420.75/5,129.08 = 1,662.30/x
  3. Step 3: Cross multiply
    3,420.75x = 5,129.08 × 1,662.30
  4. Step 4: Simplify right side
    3,420.75x = 8,526,069.68
  5. Step 5: Solve for x
    x = 8,526,069.68/3,420.75
  6. Step 6: Final answer
    x = 2,492.46

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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.