Home / 6,618.99-9,930.78-4,406.70

Finding the Fourth Proportional to 6,618.99, 9,930.78 and 4,406.70

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Solution

The fourth proportional to 6,618.99, 9,930.78 and 4,406.70 is: 6,611.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,618.99 : 9,930.78 = 4,406.70 : x
  2. Step 2: Convert to fraction form
    6,618.99/9,930.78 = 4,406.70/x
  3. Step 3: Cross multiply
    6,618.99x = 9,930.78 × 4,406.70
  4. Step 4: Simplify right side
    6,618.99x = 43,761,968.23
  5. Step 5: Solve for x
    x = 43,761,968.23/6,618.99
  6. Step 6: Final answer
    x = 6,611.58

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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.