Home / 1,621.94-2,235.94-1,155.38

Finding the Fourth Proportional to 1,621.94, 2,235.94 and 1,155.38

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Solution

The fourth proportional to 1,621.94, 2,235.94 and 1,155.38 is: 1,592.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.94 : 2,235.94 = 1,155.38 : x
  2. Step 2: Convert to fraction form
    1,621.94/2,235.94 = 1,155.38/x
  3. Step 3: Cross multiply
    1,621.94x = 2,235.94 × 1,155.38
  4. Step 4: Simplify right side
    1,621.94x = 2,583,346.29
  5. Step 5: Solve for x
    x = 2,583,346.29/1,621.94
  6. Step 6: Final answer
    x = 1,592.76

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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.