Home / 8,456.28-12,684.74-2,909.58

Finding the Fourth Proportional to 8,456.28, 12,684.74 and 2,909.58

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Solution

The fourth proportional to 8,456.28, 12,684.74 and 2,909.58 is: 4,364.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,456.28 : 12,684.74 = 2,909.58 : x
  2. Step 2: Convert to fraction form
    8,456.28/12,684.74 = 2,909.58/x
  3. Step 3: Cross multiply
    8,456.28x = 12,684.74 × 2,909.58
  4. Step 4: Simplify right side
    8,456.28x = 36,907,251.26
  5. Step 5: Solve for x
    x = 36,907,251.26/8,456.28
  6. Step 6: Final answer
    x = 4,364.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.