Home / 6,210.20-9,315.30-5,408.30

Finding the Fourth Proportional to 6,210.20, 9,315.30 and 5,408.30

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Solution

The fourth proportional to 6,210.20, 9,315.30 and 5,408.30 is: 8,112.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,210.20 : 9,315.30 = 5,408.30 : x
  2. Step 2: Convert to fraction form
    6,210.20/9,315.30 = 5,408.30/x
  3. Step 3: Cross multiply
    6,210.20x = 9,315.30 × 5,408.30
  4. Step 4: Simplify right side
    6,210.20x = 50,379,936.99
  5. Step 5: Solve for x
    x = 50,379,936.99/6,210.20
  6. Step 6: Final answer
    x = 8,112.45

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Similar ratio
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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.