Home / 8,708.28-12,009.24-6,715.68

Finding the Fourth Proportional to 8,708.28, 12,009.24 and 6,715.68

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Solution

The fourth proportional to 8,708.28, 12,009.24 and 6,715.68 is: 9,261.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.28 : 12,009.24 = 6,715.68 : x
  2. Step 2: Convert to fraction form
    8,708.28/12,009.24 = 6,715.68/x
  3. Step 3: Cross multiply
    8,708.28x = 12,009.24 × 6,715.68
  4. Step 4: Simplify right side
    8,708.28x = 80,650,212.88
  5. Step 5: Solve for x
    x = 80,650,212.88/8,708.28
  6. Step 6: Final answer
    x = 9,261.33

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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.