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Finding the Fourth Proportional to 7,674.55, 11,509.70 and 2,127.47

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Solution

The fourth proportional to 7,674.55, 11,509.70 and 2,127.47 is: 3,190.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,674.55 : 11,509.70 = 2,127.47 : x
  2. Step 2: Convert to fraction form
    7,674.55/11,509.70 = 2,127.47/x
  3. Step 3: Cross multiply
    7,674.55x = 11,509.70 × 2,127.47
  4. Step 4: Simplify right side
    7,674.55x = 24,486,473.27
  5. Step 5: Solve for x
    x = 24,486,473.27/7,674.55
  6. Step 6: Final answer
    x = 3,190.61

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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.