Home / 9,181.50-12,670.47-4,989.75

Finding the Fourth Proportional to 9,181.50, 12,670.47 and 4,989.75

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Solution

The fourth proportional to 9,181.50, 12,670.47 and 4,989.75 is: 6,885.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,181.50 : 12,670.47 = 4,989.75 : x
  2. Step 2: Convert to fraction form
    9,181.50/12,670.47 = 4,989.75/x
  3. Step 3: Cross multiply
    9,181.50x = 12,670.47 × 4,989.75
  4. Step 4: Simplify right side
    9,181.50x = 63,222,477.68
  5. Step 5: Solve for x
    x = 63,222,477.68/9,181.50
  6. Step 6: Final answer
    x = 6,885.86

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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.