Home / 3,890.52-5,368.00-2,211.80

Finding the Fourth Proportional to 3,890.52, 5,368.00 and 2,211.80

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Solution

The fourth proportional to 3,890.52, 5,368.00 and 2,211.80 is: 3,051.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.52 : 5,368.00 = 2,211.80 : x
  2. Step 2: Convert to fraction form
    3,890.52/5,368.00 = 2,211.80/x
  3. Step 3: Cross multiply
    3,890.52x = 5,368.00 × 2,211.80
  4. Step 4: Simplify right side
    3,890.52x = 11,872,910.03
  5. Step 5: Solve for x
    x = 11,872,910.03/3,890.52
  6. Step 6: Final answer
    x = 3,051.75

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1.5x scale

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.