Home / 5,401.21-8,101.54-2,114.90

Finding the Fourth Proportional to 5,401.21, 8,101.54 and 2,114.90

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Solution

The fourth proportional to 5,401.21, 8,101.54 and 2,114.90 is: 3,172.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,401.21 : 8,101.54 = 2,114.90 : x
  2. Step 2: Convert to fraction form
    5,401.21/8,101.54 = 2,114.90/x
  3. Step 3: Cross multiply
    5,401.21x = 8,101.54 × 2,114.90
  4. Step 4: Simplify right side
    5,401.21x = 17,133,969.84
  5. Step 5: Solve for x
    x = 17,133,969.84/5,401.21
  6. Step 6: Final answer
    x = 3,172.25

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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.