Home / 3,151.80-4,730.55-3,139.98

Finding the Fourth Proportional to 3,151.80, 4,730.55 and 3,139.98

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Solution

The fourth proportional to 3,151.80, 4,730.55 and 3,139.98 is: 4,712.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.80 : 4,730.55 = 3,139.98 : x
  2. Step 2: Convert to fraction form
    3,151.80/4,730.55 = 3,139.98/x
  3. Step 3: Cross multiply
    3,151.80x = 4,730.55 × 3,139.98
  4. Step 4: Simplify right side
    3,151.80x = 14,853,832.39
  5. Step 5: Solve for x
    x = 14,853,832.39/3,151.80
  6. Step 6: Final answer
    x = 4,712.81

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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.