Home / 1,889.52-2,605.95-1,217.43

Finding the Fourth Proportional to 1,889.52, 2,605.95 and 1,217.43

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Solution

The fourth proportional to 1,889.52, 2,605.95 and 1,217.43 is: 1,679.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.52 : 2,605.95 = 1,217.43 : x
  2. Step 2: Convert to fraction form
    1,889.52/2,605.95 = 1,217.43/x
  3. Step 3: Cross multiply
    1,889.52x = 2,605.95 × 1,217.43
  4. Step 4: Simplify right side
    1,889.52x = 3,172,561.71
  5. Step 5: Solve for x
    x = 3,172,561.71/1,889.52
  6. Step 6: Final answer
    x = 1,679.03

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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.