Home / 5,142.20-7,096.28-2,784.38

Finding the Fourth Proportional to 5,142.20, 7,096.28 and 2,784.38

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Solution

The fourth proportional to 5,142.20, 7,096.28 and 2,784.38 is: 3,842.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.20 : 7,096.28 = 2,784.38 : x
  2. Step 2: Convert to fraction form
    5,142.20/7,096.28 = 2,784.38/x
  3. Step 3: Cross multiply
    5,142.20x = 7,096.28 × 2,784.38
  4. Step 4: Simplify right side
    5,142.20x = 19,758,690.70
  5. Step 5: Solve for x
    x = 19,758,690.70/5,142.20
  6. Step 6: Final answer
    x = 3,842.46

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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.