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Finding the Fourth Proportional to 3,158.72, 4,357.68 and 1,899.44

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Solution

The fourth proportional to 3,158.72, 4,357.68 and 1,899.44 is: 2,620.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.72 : 4,357.68 = 1,899.44 : x
  2. Step 2: Convert to fraction form
    3,158.72/4,357.68 = 1,899.44/x
  3. Step 3: Cross multiply
    3,158.72x = 4,357.68 × 1,899.44
  4. Step 4: Simplify right side
    3,158.72x = 8,277,151.70
  5. Step 5: Solve for x
    x = 8,277,151.70/3,158.72
  6. Step 6: Final answer
    x = 2,620.41

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1.5x scale

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.