Home / 2,890.58-3,988.87-1,631.66

Finding the Fourth Proportional to 2,890.58, 3,988.87 and 1,631.66

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Solution

The fourth proportional to 2,890.58, 3,988.87 and 1,631.66 is: 2,251.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.58 : 3,988.87 = 1,631.66 : x
  2. Step 2: Convert to fraction form
    2,890.58/3,988.87 = 1,631.66/x
  3. Step 3: Cross multiply
    2,890.58x = 3,988.87 × 1,631.66
  4. Step 4: Simplify right side
    2,890.58x = 6,508,455.60
  5. Step 5: Solve for x
    x = 6,508,455.60/2,890.58
  6. Step 6: Final answer
    x = 2,251.61

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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.