Home / 5,142.60-7,096.80-2,784.74

Finding the Fourth Proportional to 5,142.60, 7,096.80 and 2,784.74

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Solution

The fourth proportional to 5,142.60, 7,096.80 and 2,784.74 is: 3,842.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.60 : 7,096.80 = 2,784.74 : x
  2. Step 2: Convert to fraction form
    5,142.60/7,096.80 = 2,784.74/x
  3. Step 3: Cross multiply
    5,142.60x = 7,096.80 × 2,784.74
  4. Step 4: Simplify right side
    5,142.60x = 19,762,742.83
  5. Step 5: Solve for x
    x = 19,762,742.83/5,142.60
  6. Step 6: Final answer
    x = 3,842.95

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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.