Home / 8,128.48-12,193.74-2,862.25

Finding the Fourth Proportional to 8,128.48, 12,193.74 and 2,862.25

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Solution

The fourth proportional to 8,128.48, 12,193.74 and 2,862.25 is: 4,293.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.48 : 12,193.74 = 2,862.25 : x
  2. Step 2: Convert to fraction form
    8,128.48/12,193.74 = 2,862.25/x
  3. Step 3: Cross multiply
    8,128.48x = 12,193.74 × 2,862.25
  4. Step 4: Simplify right side
    8,128.48x = 34,901,532.32
  5. Step 5: Solve for x
    x = 34,901,532.32/8,128.48
  6. Step 6: Final answer
    x = 4,293.73

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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.