Home / 3,621.68-5,433.28-1,313.04

Finding the Fourth Proportional to 3,621.68, 5,433.28 and 1,313.04

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Solution

The fourth proportional to 3,621.68, 5,433.28 and 1,313.04 is: 1,969.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.68 : 5,433.28 = 1,313.04 : x
  2. Step 2: Convert to fraction form
    3,621.68/5,433.28 = 1,313.04/x
  3. Step 3: Cross multiply
    3,621.68x = 5,433.28 × 1,313.04
  4. Step 4: Simplify right side
    3,621.68x = 7,134,113.97
  5. Step 5: Solve for x
    x = 7,134,113.97/3,621.68
  6. Step 6: Final answer
    x = 1,969.84

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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.