Home / 8,203.20-12,308.80-3,818.40

Finding the Fourth Proportional to 8,203.20, 12,308.80 and 3,818.40

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Solution

The fourth proportional to 8,203.20, 12,308.80 and 3,818.40 is: 5,729.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,203.20 : 12,308.80 = 3,818.40 : x
  2. Step 2: Convert to fraction form
    8,203.20/12,308.80 = 3,818.40/x
  3. Step 3: Cross multiply
    8,203.20x = 12,308.80 × 3,818.40
  4. Step 4: Simplify right side
    8,203.20x = 46,999,921.92
  5. Step 5: Solve for x
    x = 46,999,921.92/8,203.20
  6. Step 6: Final answer
    x = 5,729.46

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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.