Home / 9,181.31-12,670.22-4,989.56

Finding the Fourth Proportional to 9,181.31, 12,670.22 and 4,989.56

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Solution

The fourth proportional to 9,181.31, 12,670.22 and 4,989.56 is: 6,885.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,181.31 : 12,670.22 = 4,989.56 : x
  2. Step 2: Convert to fraction form
    9,181.31/12,670.22 = 4,989.56/x
  3. Step 3: Cross multiply
    9,181.31x = 12,670.22 × 4,989.56
  4. Step 4: Simplify right side
    9,181.31x = 63,218,867.05
  5. Step 5: Solve for x
    x = 63,218,867.05/9,181.31
  6. Step 6: Final answer
    x = 6,885.60

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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.