Home / 8,190.79-12,287.40-2,643.10

Finding the Fourth Proportional to 8,190.79, 12,287.40 and 2,643.10

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Solution

The fourth proportional to 8,190.79, 12,287.40 and 2,643.10 is: 3,965.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,190.79 : 12,287.40 = 2,643.10 : x
  2. Step 2: Convert to fraction form
    8,190.79/12,287.40 = 2,643.10/x
  3. Step 3: Cross multiply
    8,190.79x = 12,287.40 × 2,643.10
  4. Step 4: Simplify right side
    8,190.79x = 32,476,786.31
  5. Step 5: Solve for x
    x = 32,476,786.31/8,190.79
  6. Step 6: Final answer
    x = 3,965.04

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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.