Home / 9,134.28-12,583.44-8,689.60

Finding the Fourth Proportional to 9,134.28, 12,583.44 and 8,689.60

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Solution

The fourth proportional to 9,134.28, 12,583.44 and 8,689.60 is: 11,970.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,134.28 : 12,583.44 = 8,689.60 : x
  2. Step 2: Convert to fraction form
    9,134.28/12,583.44 = 8,689.60/x
  3. Step 3: Cross multiply
    9,134.28x = 12,583.44 × 8,689.60
  4. Step 4: Simplify right side
    9,134.28x = 109,345,060.22
  5. Step 5: Solve for x
    x = 109,345,060.22/9,134.28
  6. Step 6: Final answer
    x = 11,970.85

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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.