Home / 9,216.40-12,717.12-8,749.48

Finding the Fourth Proportional to 9,216.40, 12,717.12 and 8,749.48

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Solution

The fourth proportional to 9,216.40, 12,717.12 and 8,749.48 is: 12,072.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,216.40 : 12,717.12 = 8,749.48 : x
  2. Step 2: Convert to fraction form
    9,216.40/12,717.12 = 8,749.48/x
  3. Step 3: Cross multiply
    9,216.40x = 12,717.12 × 8,749.48
  4. Step 4: Simplify right side
    9,216.40x = 111,268,187.10
  5. Step 5: Solve for x
    x = 111,268,187.10/9,216.40
  6. Step 6: Final answer
    x = 12,072.85

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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.