Home / 2,359.14-3,255.70-1,311.30

Finding the Fourth Proportional to 2,359.14, 3,255.70 and 1,311.30

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Solution

The fourth proportional to 2,359.14, 3,255.70 and 1,311.30 is: 1,809.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,359.14 : 3,255.70 = 1,311.30 : x
  2. Step 2: Convert to fraction form
    2,359.14/3,255.70 = 1,311.30/x
  3. Step 3: Cross multiply
    2,359.14x = 3,255.70 × 1,311.30
  4. Step 4: Simplify right side
    2,359.14x = 4,269,199.41
  5. Step 5: Solve for x
    x = 4,269,199.41/2,359.14
  6. Step 6: Final answer
    x = 1,809.64

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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.