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Finding the Fourth Proportional to 4,188.84, 6,279.42 and 1,879.08

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Solution

The fourth proportional to 4,188.84, 6,279.42 and 1,879.08 is: 2,816.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188.84 : 6,279.42 = 1,879.08 : x
  2. Step 2: Convert to fraction form
    4,188.84/6,279.42 = 1,879.08/x
  3. Step 3: Cross multiply
    4,188.84x = 6,279.42 × 1,879.08
  4. Step 4: Simplify right side
    4,188.84x = 11,799,532.53
  5. Step 5: Solve for x
    x = 11,799,532.53/4,188.84
  6. Step 6: Final answer
    x = 2,816.90

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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.