Home / 8,342.40-12,504.56-5,422.80

Finding the Fourth Proportional to 8,342.40, 12,504.56 and 5,422.80

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Solution

The fourth proportional to 8,342.40, 12,504.56 and 5,422.80 is: 8,128.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,342.40 : 12,504.56 = 5,422.80 : x
  2. Step 2: Convert to fraction form
    8,342.40/12,504.56 = 5,422.80/x
  3. Step 3: Cross multiply
    8,342.40x = 12,504.56 × 5,422.80
  4. Step 4: Simplify right side
    8,342.40x = 67,809,727.97
  5. Step 5: Solve for x
    x = 67,809,727.97/8,342.40
  6. Step 6: Final answer
    x = 8,128.32

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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.