Home / 8,124.40-12,185.70-2,281.60

Finding the Fourth Proportional to 8,124.40, 12,185.70 and 2,281.60

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Solution

The fourth proportional to 8,124.40, 12,185.70 and 2,281.60 is: 3,422.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,124.40 : 12,185.70 = 2,281.60 : x
  2. Step 2: Convert to fraction form
    8,124.40/12,185.70 = 2,281.60/x
  3. Step 3: Cross multiply
    8,124.40x = 12,185.70 × 2,281.60
  4. Step 4: Simplify right side
    8,124.40x = 27,802,893.12
  5. Step 5: Solve for x
    x = 27,802,893.12/8,124.40
  6. Step 6: Final answer
    x = 3,422.15

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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.