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Finding the Fourth Proportional to 4,900.92, 7,351.78 and 1,613.92

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Solution

The fourth proportional to 4,900.92, 7,351.78 and 1,613.92 is: 2,421.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,900.92 : 7,351.78 = 1,613.92 : x
  2. Step 2: Convert to fraction form
    4,900.92/7,351.78 = 1,613.92/x
  3. Step 3: Cross multiply
    4,900.92x = 7,351.78 × 1,613.92
  4. Step 4: Simplify right side
    4,900.92x = 11,865,184.78
  5. Step 5: Solve for x
    x = 11,865,184.78/4,900.92
  6. Step 6: Final answer
    x = 2,421.01

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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.