Home / 9,181.75-12,671.90-5,455.75

Finding the Fourth Proportional to 9,181.75, 12,671.90 and 5,455.75

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Solution

The fourth proportional to 9,181.75, 12,671.90 and 5,455.75 is: 7,529.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,181.75 : 12,671.90 = 5,455.75 : x
  2. Step 2: Convert to fraction form
    9,181.75/12,671.90 = 5,455.75/x
  3. Step 3: Cross multiply
    9,181.75x = 12,671.90 × 5,455.75
  4. Step 4: Simplify right side
    9,181.75x = 69,134,718.43
  5. Step 5: Solve for x
    x = 69,134,718.43/9,181.75
  6. Step 6: Final answer
    x = 7,529.58

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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.