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Finding the Fourth Proportional to 4,661.70, 6,992.55 and 4,143.30

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Solution

The fourth proportional to 4,661.70, 6,992.55 and 4,143.30 is: 6,214.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,661.70 : 6,992.55 = 4,143.30 : x
  2. Step 2: Convert to fraction form
    4,661.70/6,992.55 = 4,143.30/x
  3. Step 3: Cross multiply
    4,661.70x = 6,992.55 × 4,143.30
  4. Step 4: Simplify right side
    4,661.70x = 28,972,232.42
  5. Step 5: Solve for x
    x = 28,972,232.42/4,661.70
  6. Step 6: Final answer
    x = 6,214.95

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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.