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Finding the Fourth Proportional to 2,319.92, 3,479.88 and 1,406

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Solution

The fourth proportional to 2,319.92, 3,479.88 and 1,406 is: 2,109

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.92 : 3,479.88 = 1,406 : x
  2. Step 2: Convert to fraction form
    2,319.92/3,479.88 = 1,406/x
  3. Step 3: Cross multiply
    2,319.92x = 3,479.88 × 1,406
  4. Step 4: Simplify right side
    2,319.92x = 4,892,711.28
  5. Step 5: Solve for x
    x = 4,892,711.28/2,319.92
  6. Step 6: Final answer
    x = 2,109

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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.