Home / 1,898.10-2,615.49-1,399.95

Finding the Fourth Proportional to 1,898.10, 2,615.49 and 1,399.95

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Solution

The fourth proportional to 1,898.10, 2,615.49 and 1,399.95 is: 1,929.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.10 : 2,615.49 = 1,399.95 : x
  2. Step 2: Convert to fraction form
    1,898.10/2,615.49 = 1,399.95/x
  3. Step 3: Cross multiply
    1,898.10x = 2,615.49 × 1,399.95
  4. Step 4: Simplify right side
    1,898.10x = 3,661,555.23
  5. Step 5: Solve for x
    x = 3,661,555.23/1,898.10
  6. Step 6: Final answer
    x = 1,929.06

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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.