Home / 3,139.11-4,708.50-1,289.76

Finding the Fourth Proportional to 3,139.11, 4,708.50 and 1,289.76

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Solution

The fourth proportional to 3,139.11, 4,708.50 and 1,289.76 is: 1,934.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.11 : 4,708.50 = 1,289.76 : x
  2. Step 2: Convert to fraction form
    3,139.11/4,708.50 = 1,289.76/x
  3. Step 3: Cross multiply
    3,139.11x = 4,708.50 × 1,289.76
  4. Step 4: Simplify right side
    3,139.11x = 6,072,834.96
  5. Step 5: Solve for x
    x = 6,072,834.96/3,139.11
  6. Step 6: Final answer
    x = 1,934.57

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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.