Home / 1,453.61-2,179.32-723.70

Finding the Fourth Proportional to 1,453.61, 2,179.32 and 723.70

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Solution

The fourth proportional to 1,453.61, 2,179.32 and 723.70 is: 1,085.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,453.61 : 2,179.32 = 723.70 : x
  2. Step 2: Convert to fraction form
    1,453.61/2,179.32 = 723.70/x
  3. Step 3: Cross multiply
    1,453.61x = 2,179.32 × 723.70
  4. Step 4: Simplify right side
    1,453.61x = 1,577,177.97
  5. Step 5: Solve for x
    x = 1,577,177.97/1,453.61
  6. Step 6: Final answer
    x = 1,085.01

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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.