Home / 7,644.24-11,457.12-3,478.55

Finding the Fourth Proportional to 7,644.24, 11,457.12 and 3,478.55

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Solution

The fourth proportional to 7,644.24, 11,457.12 and 3,478.55 is: 5,213.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,644.24 : 11,457.12 = 3,478.55 : x
  2. Step 2: Convert to fraction form
    7,644.24/11,457.12 = 3,478.55/x
  3. Step 3: Cross multiply
    7,644.24x = 11,457.12 × 3,478.55
  4. Step 4: Simplify right side
    7,644.24x = 39,854,107.49
  5. Step 5: Solve for x
    x = 39,854,107.49/7,644.24
  6. Step 6: Final answer
    x = 5,213.61

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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.