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Finding the Fourth Proportional to 4,319, 6,479.28 and 2,859.36

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Solution

The fourth proportional to 4,319, 6,479.28 and 2,859.36 is: 4,289.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,319 : 6,479.28 = 2,859.36 : x
  2. Step 2: Convert to fraction form
    4,319/6,479.28 = 2,859.36/x
  3. Step 3: Cross multiply
    4,319x = 6,479.28 × 2,859.36
  4. Step 4: Simplify right side
    4,319x = 18,526,594.06
  5. Step 5: Solve for x
    x = 18,526,594.06/4,319
  6. Step 6: Final answer
    x = 4,289.56

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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.