Home / 8,709.64-12,025.38-6,689.68

Finding the Fourth Proportional to 8,709.64, 12,025.38 and 6,689.68

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Solution

The fourth proportional to 8,709.64, 12,025.38 and 6,689.68 is: 9,236.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.64 : 12,025.38 = 6,689.68 : x
  2. Step 2: Convert to fraction form
    8,709.64/12,025.38 = 6,689.68/x
  3. Step 3: Cross multiply
    8,709.64x = 12,025.38 × 6,689.68
  4. Step 4: Simplify right side
    8,709.64x = 80,445,944.08
  5. Step 5: Solve for x
    x = 80,445,944.08/8,709.64
  6. Step 6: Final answer
    x = 9,236.43

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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.