Home / 2,341.50-3,231.28-1,279.28

Finding the Fourth Proportional to 2,341.50, 3,231.28 and 1,279.28

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Solution

The fourth proportional to 2,341.50, 3,231.28 and 1,279.28 is: 1,765.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,341.50 : 3,231.28 = 1,279.28 : x
  2. Step 2: Convert to fraction form
    2,341.50/3,231.28 = 1,279.28/x
  3. Step 3: Cross multiply
    2,341.50x = 3,231.28 × 1,279.28
  4. Step 4: Simplify right side
    2,341.50x = 4,133,711.88
  5. Step 5: Solve for x
    x = 4,133,711.88/2,341.50
  6. Step 6: Final answer
    x = 1,765.41

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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.