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Finding the Fourth Proportional to 3,151.92, 4,349.79 and 1,754.67

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Solution

The fourth proportional to 3,151.92, 4,349.79 and 1,754.67 is: 2,421.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.92 : 4,349.79 = 1,754.67 : x
  2. Step 2: Convert to fraction form
    3,151.92/4,349.79 = 1,754.67/x
  3. Step 3: Cross multiply
    3,151.92x = 4,349.79 × 1,754.67
  4. Step 4: Simplify right side
    3,151.92x = 7,632,446.02
  5. Step 5: Solve for x
    x = 7,632,446.02/3,151.92
  6. Step 6: Final answer
    x = 2,421.52

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1.5x scale

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.