Home / 8,181.40-11,290.32-4,643.92

Finding the Fourth Proportional to 8,181.40, 11,290.32 and 4,643.92

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Solution

The fourth proportional to 8,181.40, 11,290.32 and 4,643.92 is: 6,408.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,181.40 : 11,290.32 = 4,643.92 : x
  2. Step 2: Convert to fraction form
    8,181.40/11,290.32 = 4,643.92/x
  3. Step 3: Cross multiply
    8,181.40x = 11,290.32 × 4,643.92
  4. Step 4: Simplify right side
    8,181.40x = 52,431,342.85
  5. Step 5: Solve for x
    x = 52,431,342.85/8,181.40
  6. Step 6: Final answer
    x = 6,408.60

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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.