Home / 1,621.87-2,433.18-800.53

Finding the Fourth Proportional to 1,621.87, 2,433.18 and 800.53

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Solution

The fourth proportional to 1,621.87, 2,433.18 and 800.53 is: 1,200.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.87 : 2,433.18 = 800.53 : x
  2. Step 2: Convert to fraction form
    1,621.87/2,433.18 = 800.53/x
  3. Step 3: Cross multiply
    1,621.87x = 2,433.18 × 800.53
  4. Step 4: Simplify right side
    1,621.87x = 1,947,833.59
  5. Step 5: Solve for x
    x = 1,947,833.59/1,621.87
  6. Step 6: Final answer
    x = 1,200.98

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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.