Home / 3,904.93-5,385.48-2,912.58

Finding the Fourth Proportional to 3,904.93, 5,385.48 and 2,912.58

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Solution

The fourth proportional to 3,904.93, 5,385.48 and 2,912.58 is: 4,016.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.93 : 5,385.48 = 2,912.58 : x
  2. Step 2: Convert to fraction form
    3,904.93/5,385.48 = 2,912.58/x
  3. Step 3: Cross multiply
    3,904.93x = 5,385.48 × 2,912.58
  4. Step 4: Simplify right side
    3,904.93x = 15,685,641.34
  5. Step 5: Solve for x
    x = 15,685,641.34/3,904.93
  6. Step 6: Final answer
    x = 4,016.88

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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.