Home / 6,990.24-10,489.56-2,830.80

Finding the Fourth Proportional to 6,990.24, 10,489.56 and 2,830.80

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Solution

The fourth proportional to 6,990.24, 10,489.56 and 2,830.80 is: 4,247.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.24 : 10,489.56 = 2,830.80 : x
  2. Step 2: Convert to fraction form
    6,990.24/10,489.56 = 2,830.80/x
  3. Step 3: Cross multiply
    6,990.24x = 10,489.56 × 2,830.80
  4. Step 4: Simplify right side
    6,990.24x = 29,693,846.45
  5. Step 5: Solve for x
    x = 29,693,846.45/6,990.24
  6. Step 6: Final answer
    x = 4,247.90

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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.