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Finding the Fourth Proportional to 4,879.70, 6,732.12 and 2,990.67

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Solution

The fourth proportional to 4,879.70, 6,732.12 and 2,990.67 is: 4,125.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.70 : 6,732.12 = 2,990.67 : x
  2. Step 2: Convert to fraction form
    4,879.70/6,732.12 = 2,990.67/x
  3. Step 3: Cross multiply
    4,879.70x = 6,732.12 × 2,990.67
  4. Step 4: Simplify right side
    4,879.70x = 20,133,549.32
  5. Step 5: Solve for x
    x = 20,133,549.32/4,879.70
  6. Step 6: Final answer
    x = 4,125.98

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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.