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Finding the Fourth Proportional to 2,951.54, 4,424.12 and 1,390.22

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Solution

The fourth proportional to 2,951.54, 4,424.12 and 1,390.22 is: 2,083.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,951.54 : 4,424.12 = 1,390.22 : x
  2. Step 2: Convert to fraction form
    2,951.54/4,424.12 = 1,390.22/x
  3. Step 3: Cross multiply
    2,951.54x = 4,424.12 × 1,390.22
  4. Step 4: Simplify right side
    2,951.54x = 6,150,500.11
  5. Step 5: Solve for x
    x = 6,150,500.11/2,951.54
  6. Step 6: Final answer
    x = 2,083.83

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1.5x scale

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.