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Finding the Fourth Proportional to 8,065, 11,128.80 and 4,527.72

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Solution

The fourth proportional to 8,065, 11,128.80 and 4,527.72 is: 6,247.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,065 : 11,128.80 = 4,527.72 : x
  2. Step 2: Convert to fraction form
    8,065/11,128.80 = 4,527.72/x
  3. Step 3: Cross multiply
    8,065x = 11,128.80 × 4,527.72
  4. Step 4: Simplify right side
    8,065x = 50,388,090.34
  5. Step 5: Solve for x
    x = 50,388,090.34/8,065
  6. Step 6: Final answer
    x = 6,247.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.