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Finding the Fourth Proportional to 3,125.80, 4,687.98 and 934.48

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Solution

The fourth proportional to 3,125.80, 4,687.98 and 934.48 is: 1,401.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.80 : 4,687.98 = 934.48 : x
  2. Step 2: Convert to fraction form
    3,125.80/4,687.98 = 934.48/x
  3. Step 3: Cross multiply
    3,125.80x = 4,687.98 × 934.48
  4. Step 4: Simplify right side
    3,125.80x = 4,380,823.55
  5. Step 5: Solve for x
    x = 4,380,823.55/3,125.80
  6. Step 6: Final answer
    x = 1,401.50

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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.