Home / 4,879.20-7,313.55-2,107.18

Finding the Fourth Proportional to 4,879.20, 7,313.55 and 2,107.18

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Solution

The fourth proportional to 4,879.20, 7,313.55 and 2,107.18 is: 3,158.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.20 : 7,313.55 = 2,107.18 : x
  2. Step 2: Convert to fraction form
    4,879.20/7,313.55 = 2,107.18/x
  3. Step 3: Cross multiply
    4,879.20x = 7,313.55 × 2,107.18
  4. Step 4: Simplify right side
    4,879.20x = 15,410,948.01
  5. Step 5: Solve for x
    x = 15,410,948.01/4,879.20
  6. Step 6: Final answer
    x = 3,158.50

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Half scale
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Double scale
Find fourth proportional to 4,880.20, 7,315.05 and 2,108.18
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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.