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Finding the Fourth Proportional to 3,451.77, 5,176.68 and 985.93

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Solution

The fourth proportional to 3,451.77, 5,176.68 and 985.93 is: 1,478.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,451.77 : 5,176.68 = 985.93 : x
  2. Step 2: Convert to fraction form
    3,451.77/5,176.68 = 985.93/x
  3. Step 3: Cross multiply
    3,451.77x = 5,176.68 × 985.93
  4. Step 4: Simplify right side
    3,451.77x = 5,103,827.47
  5. Step 5: Solve for x
    x = 5,103,827.47/3,451.77
  6. Step 6: Final answer
    x = 1,478.61

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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.