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Finding the Fourth Proportional to 3,390.61, 5,085.93 and 1,197.94

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Solution

The fourth proportional to 3,390.61, 5,085.93 and 1,197.94 is: 1,796.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.61 : 5,085.93 = 1,197.94 : x
  2. Step 2: Convert to fraction form
    3,390.61/5,085.93 = 1,197.94/x
  3. Step 3: Cross multiply
    3,390.61x = 5,085.93 × 1,197.94
  4. Step 4: Simplify right side
    3,390.61x = 6,092,638.98
  5. Step 5: Solve for x
    x = 6,092,638.98/3,390.61
  6. Step 6: Final answer
    x = 1,796.92

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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.