Home / 9,181.36-12,670.40-4,989.60

Finding the Fourth Proportional to 9,181.36, 12,670.40 and 4,989.60

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Solution

The fourth proportional to 9,181.36, 12,670.40 and 4,989.60 is: 6,885.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,181.36 : 12,670.40 = 4,989.60 : x
  2. Step 2: Convert to fraction form
    9,181.36/12,670.40 = 4,989.60/x
  3. Step 3: Cross multiply
    9,181.36x = 12,670.40 × 4,989.60
  4. Step 4: Simplify right side
    9,181.36x = 63,220,227.84
  5. Step 5: Solve for x
    x = 63,220,227.84/9,181.36
  6. Step 6: Final answer
    x = 6,885.71

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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.