Home / 8,215.12-11,336.44-4,678.32

Finding the Fourth Proportional to 8,215.12, 11,336.44 and 4,678.32

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Solution

The fourth proportional to 8,215.12, 11,336.44 and 4,678.32 is: 6,455.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.12 : 11,336.44 = 4,678.32 : x
  2. Step 2: Convert to fraction form
    8,215.12/11,336.44 = 4,678.32/x
  3. Step 3: Cross multiply
    8,215.12x = 11,336.44 × 4,678.32
  4. Step 4: Simplify right side
    8,215.12x = 53,035,493.98
  5. Step 5: Solve for x
    x = 53,035,493.98/8,215.12
  6. Step 6: Final answer
    x = 6,455.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.