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Finding the Fourth Proportional to 1,791.21, 2,684.54 and 970.18

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Solution

The fourth proportional to 1,791.21, 2,684.54 and 970.18 is: 1,454.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,791.21 : 2,684.54 = 970.18 : x
  2. Step 2: Convert to fraction form
    1,791.21/2,684.54 = 970.18/x
  3. Step 3: Cross multiply
    1,791.21x = 2,684.54 × 970.18
  4. Step 4: Simplify right side
    1,791.21x = 2,604,482.73
  5. Step 5: Solve for x
    x = 2,604,482.73/1,791.21
  6. Step 6: Final answer
    x = 1,454.03

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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.