Home / 8,267.36-12,406.28-7,720.60

Finding the Fourth Proportional to 8,267.36, 12,406.28 and 7,720.60

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Solution

The fourth proportional to 8,267.36, 12,406.28 and 7,720.60 is: 11,585.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,267.36 : 12,406.28 = 7,720.60 : x
  2. Step 2: Convert to fraction form
    8,267.36/12,406.28 = 7,720.60/x
  3. Step 3: Cross multiply
    8,267.36x = 12,406.28 × 7,720.60
  4. Step 4: Simplify right side
    8,267.36x = 95,783,925.37
  5. Step 5: Solve for x
    x = 95,783,925.37/8,267.36
  6. Step 6: Final answer
    x = 11,585.79

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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.