Home / 3,270.45-4,902.90-1,420.17

Finding the Fourth Proportional to 3,270.45, 4,902.90 and 1,420.17

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Solution

The fourth proportional to 3,270.45, 4,902.90 and 1,420.17 is: 2,129.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,270.45 : 4,902.90 = 1,420.17 : x
  2. Step 2: Convert to fraction form
    3,270.45/4,902.90 = 1,420.17/x
  3. Step 3: Cross multiply
    3,270.45x = 4,902.90 × 1,420.17
  4. Step 4: Simplify right side
    3,270.45x = 6,962,951.49
  5. Step 5: Solve for x
    x = 6,962,951.49/3,270.45
  6. Step 6: Final answer
    x = 2,129.05

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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.