Home / 8,813.99-13,221.03-2,970.65

Finding the Fourth Proportional to 8,813.99, 13,221.03 and 2,970.65

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Solution

The fourth proportional to 8,813.99, 13,221.03 and 2,970.65 is: 4,455.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.99 : 13,221.03 = 2,970.65 : x
  2. Step 2: Convert to fraction form
    8,813.99/13,221.03 = 2,970.65/x
  3. Step 3: Cross multiply
    8,813.99x = 13,221.03 × 2,970.65
  4. Step 4: Simplify right side
    8,813.99x = 39,275,096.96
  5. Step 5: Solve for x
    x = 39,275,096.96/8,813.99
  6. Step 6: Final answer
    x = 4,455.99

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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.