Home / 1,815.26-2,717.98-1,423.20

Finding the Fourth Proportional to 1,815.26, 2,717.98 and 1,423.20

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Solution

The fourth proportional to 1,815.26, 2,717.98 and 1,423.20 is: 2,130.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.26 : 2,717.98 = 1,423.20 : x
  2. Step 2: Convert to fraction form
    1,815.26/2,717.98 = 1,423.20/x
  3. Step 3: Cross multiply
    1,815.26x = 2,717.98 × 1,423.20
  4. Step 4: Simplify right side
    1,815.26x = 3,868,229.14
  5. Step 5: Solve for x
    x = 3,868,229.14/1,815.26
  6. Step 6: Final answer
    x = 2,130.95

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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.