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Finding the Fourth Proportional to 7,896.55, 11,844.77 and 3,215.46

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Solution

The fourth proportional to 7,896.55, 11,844.77 and 3,215.46 is: 4,823.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,896.55 : 11,844.77 = 3,215.46 : x
  2. Step 2: Convert to fraction form
    7,896.55/11,844.77 = 3,215.46/x
  3. Step 3: Cross multiply
    7,896.55x = 11,844.77 × 3,215.46
  4. Step 4: Simplify right side
    7,896.55x = 38,086,376.08
  5. Step 5: Solve for x
    x = 38,086,376.08/7,896.55
  6. Step 6: Final answer
    x = 4,823.17

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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.