Home / 3,478.61-5,211.84-2,897.35

Finding the Fourth Proportional to 3,478.61, 5,211.84 and 2,897.35

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Solution

The fourth proportional to 3,478.61, 5,211.84 and 2,897.35 is: 4,340.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.61 : 5,211.84 = 2,897.35 : x
  2. Step 2: Convert to fraction form
    3,478.61/5,211.84 = 2,897.35/x
  3. Step 3: Cross multiply
    3,478.61x = 5,211.84 × 2,897.35
  4. Step 4: Simplify right side
    3,478.61x = 15,100,511.59
  5. Step 5: Solve for x
    x = 15,100,511.59/3,478.61
  6. Step 6: Final answer
    x = 4,340.96

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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.