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Finding the Fourth Proportional to 6,479.36, 9,719.52 and 1,862.72

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Solution

The fourth proportional to 6,479.36, 9,719.52 and 1,862.72 is: 2,794.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,479.36 : 9,719.52 = 1,862.72 : x
  2. Step 2: Convert to fraction form
    6,479.36/9,719.52 = 1,862.72/x
  3. Step 3: Cross multiply
    6,479.36x = 9,719.52 × 1,862.72
  4. Step 4: Simplify right side
    6,479.36x = 18,104,744.29
  5. Step 5: Solve for x
    x = 18,104,744.29/6,479.36
  6. Step 6: Final answer
    x = 2,794.22

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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.