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Finding the Fourth Proportional to 3,125.70, 4,687.47 and 934.38

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Solution

The fourth proportional to 3,125.70, 4,687.47 and 934.38 is: 1,401.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.70 : 4,687.47 = 934.38 : x
  2. Step 2: Convert to fraction form
    3,125.70/4,687.47 = 934.38/x
  3. Step 3: Cross multiply
    3,125.70x = 4,687.47 × 934.38
  4. Step 4: Simplify right side
    3,125.70x = 4,379,878.22
  5. Step 5: Solve for x
    x = 4,379,878.22/3,125.70
  6. Step 6: Final answer
    x = 1,401.25

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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.