Home / 5,140.64-7,698.54-2,942.72

Finding the Fourth Proportional to 5,140.64, 7,698.54 and 2,942.72

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Solution

The fourth proportional to 5,140.64, 7,698.54 and 2,942.72 is: 4,406.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.64 : 7,698.54 = 2,942.72 : x
  2. Step 2: Convert to fraction form
    5,140.64/7,698.54 = 2,942.72/x
  3. Step 3: Cross multiply
    5,140.64x = 7,698.54 × 2,942.72
  4. Step 4: Simplify right side
    5,140.64x = 22,654,647.63
  5. Step 5: Solve for x
    x = 22,654,647.63/5,140.64
  6. Step 6: Final answer
    x = 4,406.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.