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Finding the Fourth Proportional to 3,215.71, 4,816 and 1,567.09

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Solution

The fourth proportional to 3,215.71, 4,816 and 1,567.09 is: 2,346.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.71 : 4,816 = 1,567.09 : x
  2. Step 2: Convert to fraction form
    3,215.71/4,816 = 1,567.09/x
  3. Step 3: Cross multiply
    3,215.71x = 4,816 × 1,567.09
  4. Step 4: Simplify right side
    3,215.71x = 7,547,105.44
  5. Step 5: Solve for x
    x = 7,547,105.44/3,215.71
  6. Step 6: Final answer
    x = 2,346.95

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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.