Home / 8,289.45-12,429.90-2,445.30

Finding the Fourth Proportional to 8,289.45, 12,429.90 and 2,445.30

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Solution

The fourth proportional to 8,289.45, 12,429.90 and 2,445.30 is: 3,666.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,289.45 : 12,429.90 = 2,445.30 : x
  2. Step 2: Convert to fraction form
    8,289.45/12,429.90 = 2,445.30/x
  3. Step 3: Cross multiply
    8,289.45x = 12,429.90 × 2,445.30
  4. Step 4: Simplify right side
    8,289.45x = 30,394,834.47
  5. Step 5: Solve for x
    x = 30,394,834.47/8,289.45
  6. Step 6: Final answer
    x = 3,666.69

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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.