Home / 8,123.30-11,215.37-6,634.79

Finding the Fourth Proportional to 8,123.30, 11,215.37 and 6,634.79

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Solution

The fourth proportional to 8,123.30, 11,215.37 and 6,634.79 is: 9,160.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.30 : 11,215.37 = 6,634.79 : x
  2. Step 2: Convert to fraction form
    8,123.30/11,215.37 = 6,634.79/x
  3. Step 3: Cross multiply
    8,123.30x = 11,215.37 × 6,634.79
  4. Step 4: Simplify right side
    8,123.30x = 74,411,591.55
  5. Step 5: Solve for x
    x = 74,411,591.55/8,123.30
  6. Step 6: Final answer
    x = 9,160.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.