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Finding the Fourth Proportional to 2,651.72, 3,981.34 and 1,924.92

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Solution

The fourth proportional to 2,651.72, 3,981.34 and 1,924.92 is: 2,890.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651.72 : 3,981.34 = 1,924.92 : x
  2. Step 2: Convert to fraction form
    2,651.72/3,981.34 = 1,924.92/x
  3. Step 3: Cross multiply
    2,651.72x = 3,981.34 × 1,924.92
  4. Step 4: Simplify right side
    2,651.72x = 7,663,760.99
  5. Step 5: Solve for x
    x = 7,663,760.99/2,651.72
  6. Step 6: Final answer
    x = 2,890.11

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Double scale
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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.