Home / 1,453.20-2,179.80-1,412.70

Finding the Fourth Proportional to 1,453.20, 2,179.80 and 1,412.70

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Solution

The fourth proportional to 1,453.20, 2,179.80 and 1,412.70 is: 2,119.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,453.20 : 2,179.80 = 1,412.70 : x
  2. Step 2: Convert to fraction form
    1,453.20/2,179.80 = 1,412.70/x
  3. Step 3: Cross multiply
    1,453.20x = 2,179.80 × 1,412.70
  4. Step 4: Simplify right side
    1,453.20x = 3,079,403.46
  5. Step 5: Solve for x
    x = 3,079,403.46/1,453.20
  6. Step 6: Final answer
    x = 2,119.05

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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.