Home / 3,288.90-4,538.70-2,109.98

Finding the Fourth Proportional to 3,288.90, 4,538.70 and 2,109.98

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Solution

The fourth proportional to 3,288.90, 4,538.70 and 2,109.98 is: 2,911.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,288.90 : 4,538.70 = 2,109.98 : x
  2. Step 2: Convert to fraction form
    3,288.90/4,538.70 = 2,109.98/x
  3. Step 3: Cross multiply
    3,288.90x = 4,538.70 × 2,109.98
  4. Step 4: Simplify right side
    3,288.90x = 9,576,566.23
  5. Step 5: Solve for x
    x = 9,576,566.23/3,288.90
  6. Step 6: Final answer
    x = 2,911.78

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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.