Home / 1,890.87-2,834.21-1,427.15

Finding the Fourth Proportional to 1,890.87, 2,834.21 and 1,427.15

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Solution

The fourth proportional to 1,890.87, 2,834.21 and 1,427.15 is: 2,139.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.87 : 2,834.21 = 1,427.15 : x
  2. Step 2: Convert to fraction form
    1,890.87/2,834.21 = 1,427.15/x
  3. Step 3: Cross multiply
    1,890.87x = 2,834.21 × 1,427.15
  4. Step 4: Simplify right side
    1,890.87x = 4,044,837.47
  5. Step 5: Solve for x
    x = 4,044,837.47/1,890.87
  6. Step 6: Final answer
    x = 2,139.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.