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Finding the Fourth Proportional to 8,582.34, 12,873.48 and 5,639.34

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Solution

The fourth proportional to 8,582.34, 12,873.48 and 5,639.34 is: 8,458.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,582.34 : 12,873.48 = 5,639.34 : x
  2. Step 2: Convert to fraction form
    8,582.34/12,873.48 = 5,639.34/x
  3. Step 3: Cross multiply
    8,582.34x = 12,873.48 × 5,639.34
  4. Step 4: Simplify right side
    8,582.34x = 72,597,930.70
  5. Step 5: Solve for x
    x = 72,597,930.70/8,582.34
  6. Step 6: Final answer
    x = 8,458.99

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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.