Home / 3,139.59-4,332.66-1,961.35

Finding the Fourth Proportional to 3,139.59, 4,332.66 and 1,961.35

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Solution

The fourth proportional to 3,139.59, 4,332.66 and 1,961.35 is: 2,706.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.59 : 4,332.66 = 1,961.35 : x
  2. Step 2: Convert to fraction form
    3,139.59/4,332.66 = 1,961.35/x
  3. Step 3: Cross multiply
    3,139.59x = 4,332.66 × 1,961.35
  4. Step 4: Simplify right side
    3,139.59x = 8,497,844.50
  5. Step 5: Solve for x
    x = 8,497,844.50/3,139.59
  6. Step 6: Final answer
    x = 2,706.67

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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.