Home / 5,197.50-7,791.57-1,909.89

Finding the Fourth Proportional to 5,197.50, 7,791.57 and 1,909.89

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Solution

The fourth proportional to 5,197.50, 7,791.57 and 1,909.89 is: 2,863.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,197.50 : 7,791.57 = 1,909.89 : x
  2. Step 2: Convert to fraction form
    5,197.50/7,791.57 = 1,909.89/x
  3. Step 3: Cross multiply
    5,197.50x = 7,791.57 × 1,909.89
  4. Step 4: Simplify right side
    5,197.50x = 14,881,041.63
  5. Step 5: Solve for x
    x = 14,881,041.63/5,197.50
  6. Step 6: Final answer
    x = 2,863.12

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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.