Home / 5,185.78-7,156.34-2,827.88

Finding the Fourth Proportional to 5,185.78, 7,156.34 and 2,827.88

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Solution

The fourth proportional to 5,185.78, 7,156.34 and 2,827.88 is: 3,902.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.78 : 7,156.34 = 2,827.88 : x
  2. Step 2: Convert to fraction form
    5,185.78/7,156.34 = 2,827.88/x
  3. Step 3: Cross multiply
    5,185.78x = 7,156.34 × 2,827.88
  4. Step 4: Simplify right side
    5,185.78x = 20,237,270.76
  5. Step 5: Solve for x
    x = 20,237,270.76/5,185.78
  6. Step 6: Final answer
    x = 3,902.45

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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.