Home / 1,927.56-2,891.37-611.30

Finding the Fourth Proportional to 1,927.56, 2,891.37 and 611.30

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Solution

The fourth proportional to 1,927.56, 2,891.37 and 611.30 is: 916.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.56 : 2,891.37 = 611.30 : x
  2. Step 2: Convert to fraction form
    1,927.56/2,891.37 = 611.30/x
  3. Step 3: Cross multiply
    1,927.56x = 2,891.37 × 611.30
  4. Step 4: Simplify right side
    1,927.56x = 1,767,480.02
  5. Step 5: Solve for x
    x = 1,767,480.02/1,927.56
  6. Step 6: Final answer
    x = 916.95

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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.