Home / 3,139.74-4,709.61-2,279.52

Finding the Fourth Proportional to 3,139.74, 4,709.61 and 2,279.52

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Solution

The fourth proportional to 3,139.74, 4,709.61 and 2,279.52 is: 3,419.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.74 : 4,709.61 = 2,279.52 : x
  2. Step 2: Convert to fraction form
    3,139.74/4,709.61 = 2,279.52/x
  3. Step 3: Cross multiply
    3,139.74x = 4,709.61 × 2,279.52
  4. Step 4: Simplify right side
    3,139.74x = 10,735,650.19
  5. Step 5: Solve for x
    x = 10,735,650.19/3,139.74
  6. Step 6: Final answer
    x = 3,419.28

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1.5x scale

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.