Home / 2,890.53-3,988.83-1,631.58

Finding the Fourth Proportional to 2,890.53, 3,988.83 and 1,631.58

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Solution

The fourth proportional to 2,890.53, 3,988.83 and 1,631.58 is: 2,251.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.53 : 3,988.83 = 1,631.58 : x
  2. Step 2: Convert to fraction form
    2,890.53/3,988.83 = 1,631.58/x
  3. Step 3: Cross multiply
    2,890.53x = 3,988.83 × 1,631.58
  4. Step 4: Simplify right side
    2,890.53x = 6,508,095.25
  5. Step 5: Solve for x
    x = 6,508,095.25/2,890.53
  6. Step 6: Final answer
    x = 2,251.52

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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.