Home / 7,090.20-10,635.30-6,409.80

Finding the Fourth Proportional to 7,090.20, 10,635.30 and 6,409.80

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Solution

The fourth proportional to 7,090.20, 10,635.30 and 6,409.80 is: 9,614.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,090.20 : 10,635.30 = 6,409.80 : x
  2. Step 2: Convert to fraction form
    7,090.20/10,635.30 = 6,409.80/x
  3. Step 3: Cross multiply
    7,090.20x = 10,635.30 × 6,409.80
  4. Step 4: Simplify right side
    7,090.20x = 68,170,145.94
  5. Step 5: Solve for x
    x = 68,170,145.94/7,090.20
  6. Step 6: Final answer
    x = 9,614.70

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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.