Home / 6,219.16-8,580.09-3,980.68

Finding the Fourth Proportional to 6,219.16, 8,580.09 and 3,980.68

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Solution

The fourth proportional to 6,219.16, 8,580.09 and 3,980.68 is: 5,491.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,219.16 : 8,580.09 = 3,980.68 : x
  2. Step 2: Convert to fraction form
    6,219.16/8,580.09 = 3,980.68/x
  3. Step 3: Cross multiply
    6,219.16x = 8,580.09 × 3,980.68
  4. Step 4: Simplify right side
    6,219.16x = 34,154,586.14
  5. Step 5: Solve for x
    x = 34,154,586.14/6,219.16
  6. Step 6: Final answer
    x = 5,491.83

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.