Home / 2,930.28-4,045.25-1,991.02

Finding the Fourth Proportional to 2,930.28, 4,045.25 and 1,991.02

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Solution

The fourth proportional to 2,930.28, 4,045.25 and 1,991.02 is: 2,748.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.28 : 4,045.25 = 1,991.02 : x
  2. Step 2: Convert to fraction form
    2,930.28/4,045.25 = 1,991.02/x
  3. Step 3: Cross multiply
    2,930.28x = 4,045.25 × 1,991.02
  4. Step 4: Simplify right side
    2,930.28x = 8,054,168.52
  5. Step 5: Solve for x
    x = 8,054,168.52/2,930.28
  6. Step 6: Final answer
    x = 2,748.60

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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.