Home / 7,741.78-11,612.89-1,898.38

Finding the Fourth Proportional to 7,741.78, 11,612.89 and 1,898.38

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Solution

The fourth proportional to 7,741.78, 11,612.89 and 1,898.38 is: 2,847.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,741.78 : 11,612.89 = 1,898.38 : x
  2. Step 2: Convert to fraction form
    7,741.78/11,612.89 = 1,898.38/x
  3. Step 3: Cross multiply
    7,741.78x = 11,612.89 × 1,898.38
  4. Step 4: Simplify right side
    7,741.78x = 22,045,668.63
  5. Step 5: Solve for x
    x = 22,045,668.63/7,741.78
  6. Step 6: Final answer
    x = 2,847.62

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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.