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Finding the Fourth Proportional to 7,884.61, 11,812.91 and 7,026.55

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Solution

The fourth proportional to 7,884.61, 11,812.91 and 7,026.55 is: 10,527.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,884.61 : 11,812.91 = 7,026.55 : x
  2. Step 2: Convert to fraction form
    7,884.61/11,812.91 = 7,026.55/x
  3. Step 3: Cross multiply
    7,884.61x = 11,812.91 × 7,026.55
  4. Step 4: Simplify right side
    7,884.61x = 83,003,938.10
  5. Step 5: Solve for x
    x = 83,003,938.10/7,884.61
  6. Step 6: Final answer
    x = 10,527.34

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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.