Home / 4,679.72-6,456.21-2,886.89

Finding the Fourth Proportional to 4,679.72, 6,456.21 and 2,886.89

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Solution

The fourth proportional to 4,679.72, 6,456.21 and 2,886.89 is: 3,982.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.72 : 6,456.21 = 2,886.89 : x
  2. Step 2: Convert to fraction form
    4,679.72/6,456.21 = 2,886.89/x
  3. Step 3: Cross multiply
    4,679.72x = 6,456.21 × 2,886.89
  4. Step 4: Simplify right side
    4,679.72x = 18,638,335.81
  5. Step 5: Solve for x
    x = 18,638,335.81/4,679.72
  6. Step 6: Final answer
    x = 3,982.79

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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.