Home / 8,303.20-12,454.80-6,121.60

Finding the Fourth Proportional to 8,303.20, 12,454.80 and 6,121.60

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Solution

The fourth proportional to 8,303.20, 12,454.80 and 6,121.60 is: 9,182.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,303.20 : 12,454.80 = 6,121.60 : x
  2. Step 2: Convert to fraction form
    8,303.20/12,454.80 = 6,121.60/x
  3. Step 3: Cross multiply
    8,303.20x = 12,454.80 × 6,121.60
  4. Step 4: Simplify right side
    8,303.20x = 76,243,303.68
  5. Step 5: Solve for x
    x = 76,243,303.68/8,303.20
  6. Step 6: Final answer
    x = 9,182.40

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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.