Home / 5,197.31-7,791.35-1,909.63

Finding the Fourth Proportional to 5,197.31, 7,791.35 and 1,909.63

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Solution

The fourth proportional to 5,197.31, 7,791.35 and 1,909.63 is: 2,862.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,197.31 : 7,791.35 = 1,909.63 : x
  2. Step 2: Convert to fraction form
    5,197.31/7,791.35 = 1,909.63/x
  3. Step 3: Cross multiply
    5,197.31x = 7,791.35 × 1,909.63
  4. Step 4: Simplify right side
    5,197.31x = 14,878,595.70
  5. Step 5: Solve for x
    x = 14,878,595.70/5,197.31
  6. Step 6: Final answer
    x = 2,862.75

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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.