Home / 3,420.34-5,103.65-3,211.36

Finding the Fourth Proportional to 3,420.34, 5,103.65 and 3,211.36

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Solution

The fourth proportional to 3,420.34, 5,103.65 and 3,211.36 is: 4,791.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.34 : 5,103.65 = 3,211.36 : x
  2. Step 2: Convert to fraction form
    3,420.34/5,103.65 = 3,211.36/x
  3. Step 3: Cross multiply
    3,420.34x = 5,103.65 × 3,211.36
  4. Step 4: Simplify right side
    3,420.34x = 16,389,657.46
  5. Step 5: Solve for x
    x = 16,389,657.46/3,420.34
  6. Step 6: Final answer
    x = 4,791.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.