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Finding the Fourth Proportional to 7,681.63, 11,522.37 and 3,520.46

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Solution

The fourth proportional to 7,681.63, 11,522.37 and 3,520.46 is: 5,280.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,681.63 : 11,522.37 = 3,520.46 : x
  2. Step 2: Convert to fraction form
    7,681.63/11,522.37 = 3,520.46/x
  3. Step 3: Cross multiply
    7,681.63x = 11,522.37 × 3,520.46
  4. Step 4: Simplify right side
    7,681.63x = 40,564,042.69
  5. Step 5: Solve for x
    x = 40,564,042.69/7,681.63
  6. Step 6: Final answer
    x = 5,280.66

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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.