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Finding the Fourth Proportional to 2,171.55, 2,995.64 and 1,373.53

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Solution

The fourth proportional to 2,171.55, 2,995.64 and 1,373.53 is: 1,894.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.55 : 2,995.64 = 1,373.53 : x
  2. Step 2: Convert to fraction form
    2,171.55/2,995.64 = 1,373.53/x
  3. Step 3: Cross multiply
    2,171.55x = 2,995.64 × 1,373.53
  4. Step 4: Simplify right side
    2,171.55x = 4,114,607.21
  5. Step 5: Solve for x
    x = 4,114,607.21/2,171.55
  6. Step 6: Final answer
    x = 1,894.78

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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.