Home / 7,380.10-11,021.23-6,485.86

Finding the Fourth Proportional to 7,380.10, 11,021.23 and 6,485.86

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Solution

The fourth proportional to 7,380.10, 11,021.23 and 6,485.86 is: 9,685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,380.10 : 11,021.23 = 6,485.86 : x
  2. Step 2: Convert to fraction form
    7,380.10/11,021.23 = 6,485.86/x
  3. Step 3: Cross multiply
    7,380.10x = 11,021.23 × 6,485.86
  4. Step 4: Simplify right side
    7,380.10x = 71,482,194.93
  5. Step 5: Solve for x
    x = 71,482,194.93/7,380.10
  6. Step 6: Final answer
    x = 9,685.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.