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Finding the Fourth Proportional to 3,130.27, 4,695.42 and 939.01

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Solution

The fourth proportional to 3,130.27, 4,695.42 and 939.01 is: 1,408.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.27 : 4,695.42 = 939.01 : x
  2. Step 2: Convert to fraction form
    3,130.27/4,695.42 = 939.01/x
  3. Step 3: Cross multiply
    3,130.27x = 4,695.42 × 939.01
  4. Step 4: Simplify right side
    3,130.27x = 4,409,046.33
  5. Step 5: Solve for x
    x = 4,409,046.33/3,130.27
  6. Step 6: Final answer
    x = 1,408.52

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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.