Home / 1,617.12-2,231.57-953.82

Finding the Fourth Proportional to 1,617.12, 2,231.57 and 953.82

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Solution

The fourth proportional to 1,617.12, 2,231.57 and 953.82 is: 1,316.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617.12 : 2,231.57 = 953.82 : x
  2. Step 2: Convert to fraction form
    1,617.12/2,231.57 = 953.82/x
  3. Step 3: Cross multiply
    1,617.12x = 2,231.57 × 953.82
  4. Step 4: Simplify right side
    1,617.12x = 2,128,511.33
  5. Step 5: Solve for x
    x = 2,128,511.33/1,617.12
  6. Step 6: Final answer
    x = 1,316.24

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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.