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Finding the Fourth Proportional to 7,892.55, 11,835.81 and 2,626.55

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Solution

The fourth proportional to 7,892.55, 11,835.81 and 2,626.55 is: 3,938.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,892.55 : 11,835.81 = 2,626.55 : x
  2. Step 2: Convert to fraction form
    7,892.55/11,835.81 = 2,626.55/x
  3. Step 3: Cross multiply
    7,892.55x = 11,835.81 × 2,626.55
  4. Step 4: Simplify right side
    7,892.55x = 31,087,346.76
  5. Step 5: Solve for x
    x = 31,087,346.76/7,892.55
  6. Step 6: Final answer
    x = 3,938.82

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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.