Home / 4,188.64-6,279.36-1,721.92

Finding the Fourth Proportional to 4,188.64, 6,279.36 and 1,721.92

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Solution

The fourth proportional to 4,188.64, 6,279.36 and 1,721.92 is: 2,581.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188.64 : 6,279.36 = 1,721.92 : x
  2. Step 2: Convert to fraction form
    4,188.64/6,279.36 = 1,721.92/x
  3. Step 3: Cross multiply
    4,188.64x = 6,279.36 × 1,721.92
  4. Step 4: Simplify right side
    4,188.64x = 10,812,555.57
  5. Step 5: Solve for x
    x = 10,812,555.57/4,188.64
  6. Step 6: Final answer
    x = 2,581.40

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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.