Home / 2,890.65-3,989.03-1,631.67

Finding the Fourth Proportional to 2,890.65, 3,989.03 and 1,631.67

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Solution

The fourth proportional to 2,890.65, 3,989.03 and 1,631.67 is: 2,251.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.65 : 3,989.03 = 1,631.67 : x
  2. Step 2: Convert to fraction form
    2,890.65/3,989.03 = 1,631.67/x
  3. Step 3: Cross multiply
    2,890.65x = 3,989.03 × 1,631.67
  4. Step 4: Simplify right side
    2,890.65x = 6,508,772.42
  5. Step 5: Solve for x
    x = 6,508,772.42/2,890.65
  6. Step 6: Final answer
    x = 2,251.66

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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.