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Finding the Fourth Proportional to 2,509.38, 3,762.70 and 1,992.70

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Solution

The fourth proportional to 2,509.38, 3,762.70 and 1,992.70 is: 2,987.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,509.38 : 3,762.70 = 1,992.70 : x
  2. Step 2: Convert to fraction form
    2,509.38/3,762.70 = 1,992.70/x
  3. Step 3: Cross multiply
    2,509.38x = 3,762.70 × 1,992.70
  4. Step 4: Simplify right side
    2,509.38x = 7,497,932.29
  5. Step 5: Solve for x
    x = 7,497,932.29/2,509.38
  6. Step 6: Final answer
    x = 2,987.96

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1.5x scale

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.