Home / 1,621.51-2,236.23-1,372.57

Finding the Fourth Proportional to 1,621.51, 2,236.23 and 1,372.57

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Solution

The fourth proportional to 1,621.51, 2,236.23 and 1,372.57 is: 1,892.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.51 : 2,236.23 = 1,372.57 : x
  2. Step 2: Convert to fraction form
    1,621.51/2,236.23 = 1,372.57/x
  3. Step 3: Cross multiply
    1,621.51x = 2,236.23 × 1,372.57
  4. Step 4: Simplify right side
    1,621.51x = 3,069,382.21
  5. Step 5: Solve for x
    x = 3,069,382.21/1,621.51
  6. Step 6: Final answer
    x = 1,892.92

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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.