Home / 2,890.11-3,988.33-1,631.15

Finding the Fourth Proportional to 2,890.11, 3,988.33 and 1,631.15

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Solution

The fourth proportional to 2,890.11, 3,988.33 and 1,631.15 is: 2,250.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.11 : 3,988.33 = 1,631.15 : x
  2. Step 2: Convert to fraction form
    2,890.11/3,988.33 = 1,631.15/x
  3. Step 3: Cross multiply
    2,890.11x = 3,988.33 × 1,631.15
  4. Step 4: Simplify right side
    2,890.11x = 6,505,567.62
  5. Step 5: Solve for x
    x = 6,505,567.62/2,890.11
  6. Step 6: Final answer
    x = 2,250.98

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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.