Home / 3,187.04-4,397.76-1,789.76

Finding the Fourth Proportional to 3,187.04, 4,397.76 and 1,789.76

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Solution

The fourth proportional to 3,187.04, 4,397.76 and 1,789.76 is: 2,469.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.04 : 4,397.76 = 1,789.76 : x
  2. Step 2: Convert to fraction form
    3,187.04/4,397.76 = 1,789.76/x
  3. Step 3: Cross multiply
    3,187.04x = 4,397.76 × 1,789.76
  4. Step 4: Simplify right side
    3,187.04x = 7,870,934.94
  5. Step 5: Solve for x
    x = 7,870,934.94/3,187.04
  6. Step 6: Final answer
    x = 2,469.67

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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.