Home / 5,141.37-7,711.20-1,678.62

Finding the Fourth Proportional to 5,141.37, 7,711.20 and 1,678.62

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Solution

The fourth proportional to 5,141.37, 7,711.20 and 1,678.62 is: 2,517.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,141.37 : 7,711.20 = 1,678.62 : x
  2. Step 2: Convert to fraction form
    5,141.37/7,711.20 = 1,678.62/x
  3. Step 3: Cross multiply
    5,141.37x = 7,711.20 × 1,678.62
  4. Step 4: Simplify right side
    5,141.37x = 12,944,203.46
  5. Step 5: Solve for x
    x = 12,944,203.46/5,141.37
  6. Step 6: Final answer
    x = 2,517.65

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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.