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Finding the Fourth Proportional to 1,627.67, 2,439.75 and 804.17

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Solution

The fourth proportional to 1,627.67, 2,439.75 and 804.17 is: 1,205.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.67 : 2,439.75 = 804.17 : x
  2. Step 2: Convert to fraction form
    1,627.67/2,439.75 = 804.17/x
  3. Step 3: Cross multiply
    1,627.67x = 2,439.75 × 804.17
  4. Step 4: Simplify right side
    1,627.67x = 1,961,973.76
  5. Step 5: Solve for x
    x = 1,961,973.76/1,627.67
  6. Step 6: Final answer
    x = 1,205.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.