Home / 3,139.80-4,336.56-2,719.50

Finding the Fourth Proportional to 3,139.80, 4,336.56 and 2,719.50

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Solution

The fourth proportional to 3,139.80, 4,336.56 and 2,719.50 is: 3,756.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.80 : 4,336.56 = 2,719.50 : x
  2. Step 2: Convert to fraction form
    3,139.80/4,336.56 = 2,719.50/x
  3. Step 3: Cross multiply
    3,139.80x = 4,336.56 × 2,719.50
  4. Step 4: Simplify right side
    3,139.80x = 11,793,274.92
  5. Step 5: Solve for x
    x = 11,793,274.92/3,139.80
  6. Step 6: Final answer
    x = 3,756.06

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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.