Home / 5,111.45-7,660.75-2,186.31

Finding the Fourth Proportional to 5,111.45, 7,660.75 and 2,186.31

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Solution

The fourth proportional to 5,111.45, 7,660.75 and 2,186.31 is: 3,276.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.45 : 7,660.75 = 2,186.31 : x
  2. Step 2: Convert to fraction form
    5,111.45/7,660.75 = 2,186.31/x
  3. Step 3: Cross multiply
    5,111.45x = 7,660.75 × 2,186.31
  4. Step 4: Simplify right side
    5,111.45x = 16,748,774.33
  5. Step 5: Solve for x
    x = 16,748,774.33/5,111.45
  6. Step 6: Final answer
    x = 3,276.72

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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.