Home / 8,130.80-12,195.48-2,287.64

Finding the Fourth Proportional to 8,130.80, 12,195.48 and 2,287.64

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Solution

The fourth proportional to 8,130.80, 12,195.48 and 2,287.64 is: 3,431.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.80 : 12,195.48 = 2,287.64 : x
  2. Step 2: Convert to fraction form
    8,130.80/12,195.48 = 2,287.64/x
  3. Step 3: Cross multiply
    8,130.80x = 12,195.48 × 2,287.64
  4. Step 4: Simplify right side
    8,130.80x = 27,898,867.87
  5. Step 5: Solve for x
    x = 27,898,867.87/8,130.80
  6. Step 6: Final answer
    x = 3,431.26

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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.