Home / 9,120.99-12,584.73-6,090.12

Finding the Fourth Proportional to 9,120.99, 12,584.73 and 6,090.12

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Solution

The fourth proportional to 9,120.99, 12,584.73 and 6,090.12 is: 8,402.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.99 : 12,584.73 = 6,090.12 : x
  2. Step 2: Convert to fraction form
    9,120.99/12,584.73 = 6,090.12/x
  3. Step 3: Cross multiply
    9,120.99x = 12,584.73 × 6,090.12
  4. Step 4: Simplify right side
    9,120.99x = 76,642,515.87
  5. Step 5: Solve for x
    x = 76,642,515.87/9,120.99
  6. Step 6: Final answer
    x = 8,402.87

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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.