Home / 9,181.78-12,670.94-4,990.04

Finding the Fourth Proportional to 9,181.78, 12,670.94 and 4,990.04

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Solution

The fourth proportional to 9,181.78, 12,670.94 and 4,990.04 is: 6,886.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,181.78 : 12,670.94 = 4,990.04 : x
  2. Step 2: Convert to fraction form
    9,181.78/12,670.94 = 4,990.04/x
  3. Step 3: Cross multiply
    9,181.78x = 12,670.94 × 4,990.04
  4. Step 4: Simplify right side
    9,181.78x = 63,228,497.44
  5. Step 5: Solve for x
    x = 63,228,497.44/9,181.78
  6. Step 6: Final answer
    x = 6,886.30

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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.