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Finding the Fourth Proportional to 1,617.05, 2,232.09 and 953.86

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Solution

The fourth proportional to 1,617.05, 2,232.09 and 953.86 is: 1,316.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617.05 : 2,232.09 = 953.86 : x
  2. Step 2: Convert to fraction form
    1,617.05/2,232.09 = 953.86/x
  3. Step 3: Cross multiply
    1,617.05x = 2,232.09 × 953.86
  4. Step 4: Simplify right side
    1,617.05x = 2,129,090.21
  5. Step 5: Solve for x
    x = 2,129,090.21/1,617.05
  6. Step 6: Final answer
    x = 1,316.65

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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.