Home / 7,219.40-10,823.70-3,936.20

Finding the Fourth Proportional to 7,219.40, 10,823.70 and 3,936.20

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Solution

The fourth proportional to 7,219.40, 10,823.70 and 3,936.20 is: 5,901.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,219.40 : 10,823.70 = 3,936.20 : x
  2. Step 2: Convert to fraction form
    7,219.40/10,823.70 = 3,936.20/x
  3. Step 3: Cross multiply
    7,219.40x = 10,823.70 × 3,936.20
  4. Step 4: Simplify right side
    7,219.40x = 42,604,247.94
  5. Step 5: Solve for x
    x = 42,604,247.94/7,219.40
  6. Step 6: Final answer
    x = 5,901.36

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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.