Home / 2,148.50-2,964.94-1,217

Finding the Fourth Proportional to 2,148.50, 2,964.94 and 1,217

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Solution

The fourth proportional to 2,148.50, 2,964.94 and 1,217 is: 1,679.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.50 : 2,964.94 = 1,217 : x
  2. Step 2: Convert to fraction form
    2,148.50/2,964.94 = 1,217/x
  3. Step 3: Cross multiply
    2,148.50x = 2,964.94 × 1,217
  4. Step 4: Simplify right side
    2,148.50x = 3,608,331.98
  5. Step 5: Solve for x
    x = 3,608,331.98/2,148.50
  6. Step 6: Final answer
    x = 1,679.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.