Home / 4,915.68-6,783.80-2,791.31

Finding the Fourth Proportional to 4,915.68, 6,783.80 and 2,791.31

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Solution

The fourth proportional to 4,915.68, 6,783.80 and 2,791.31 is: 3,852.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915.68 : 6,783.80 = 2,791.31 : x
  2. Step 2: Convert to fraction form
    4,915.68/6,783.80 = 2,791.31/x
  3. Step 3: Cross multiply
    4,915.68x = 6,783.80 × 2,791.31
  4. Step 4: Simplify right side
    4,915.68x = 18,935,688.78
  5. Step 5: Solve for x
    x = 18,935,688.78/4,915.68
  6. Step 6: Final answer
    x = 3,852.10

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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.