Home / 8,090.99-12,118.87-4,385.39

Finding the Fourth Proportional to 8,090.99, 12,118.87 and 4,385.39

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Solution

The fourth proportional to 8,090.99, 12,118.87 and 4,385.39 is: 6,568.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,090.99 : 12,118.87 = 4,385.39 : x
  2. Step 2: Convert to fraction form
    8,090.99/12,118.87 = 4,385.39/x
  3. Step 3: Cross multiply
    8,090.99x = 12,118.87 × 4,385.39
  4. Step 4: Simplify right side
    8,090.99x = 53,145,959.70
  5. Step 5: Solve for x
    x = 53,145,959.70/8,090.99
  6. Step 6: Final answer
    x = 6,568.54

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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.