Home / 4,913.72-6,780.96-2,817.92

Finding the Fourth Proportional to 4,913.72, 6,780.96 and 2,817.92

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Solution

The fourth proportional to 4,913.72, 6,780.96 and 2,817.92 is: 3,888.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,913.72 : 6,780.96 = 2,817.92 : x
  2. Step 2: Convert to fraction form
    4,913.72/6,780.96 = 2,817.92/x
  3. Step 3: Cross multiply
    4,913.72x = 6,780.96 × 2,817.92
  4. Step 4: Simplify right side
    4,913.72x = 19,108,202.80
  5. Step 5: Solve for x
    x = 19,108,202.80/4,913.72
  6. Step 6: Final answer
    x = 3,888.74

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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.