Home / 8,311.12-11,456.40-5,653.96

Finding the Fourth Proportional to 8,311.12, 11,456.40 and 5,653.96

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Solution

The fourth proportional to 8,311.12, 11,456.40 and 5,653.96 is: 7,793.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,311.12 : 11,456.40 = 5,653.96 : x
  2. Step 2: Convert to fraction form
    8,311.12/11,456.40 = 5,653.96/x
  3. Step 3: Cross multiply
    8,311.12x = 11,456.40 × 5,653.96
  4. Step 4: Simplify right side
    8,311.12x = 64,774,027.34
  5. Step 5: Solve for x
    x = 64,774,027.34/8,311.12
  6. Step 6: Final answer
    x = 7,793.66

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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.