Home / 8,429.80-12,644.70-2,586.40

Finding the Fourth Proportional to 8,429.80, 12,644.70 and 2,586.40

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Solution

The fourth proportional to 8,429.80, 12,644.70 and 2,586.40 is: 3,879.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,429.80 : 12,644.70 = 2,586.40 : x
  2. Step 2: Convert to fraction form
    8,429.80/12,644.70 = 2,586.40/x
  3. Step 3: Cross multiply
    8,429.80x = 12,644.70 × 2,586.40
  4. Step 4: Simplify right side
    8,429.80x = 32,704,252.08
  5. Step 5: Solve for x
    x = 32,704,252.08/8,429.80
  6. Step 6: Final answer
    x = 3,879.60

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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.