Home / 8,421.75-12,623.79-2,873.13

Finding the Fourth Proportional to 8,421.75, 12,623.79 and 2,873.13

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Solution

The fourth proportional to 8,421.75, 12,623.79 and 2,873.13 is: 4,306.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.75 : 12,623.79 = 2,873.13 : x
  2. Step 2: Convert to fraction form
    8,421.75/12,623.79 = 2,873.13/x
  3. Step 3: Cross multiply
    8,421.75x = 12,623.79 × 2,873.13
  4. Step 4: Simplify right side
    8,421.75x = 36,269,789.76
  5. Step 5: Solve for x
    x = 36,269,789.76/8,421.75
  6. Step 6: Final answer
    x = 4,306.68

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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.