Home / 3,248.36-4,871.74-939.40

Finding the Fourth Proportional to 3,248.36, 4,871.74 and 939.40

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Solution

The fourth proportional to 3,248.36, 4,871.74 and 939.40 is: 1,408.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,248.36 : 4,871.74 = 939.40 : x
  2. Step 2: Convert to fraction form
    3,248.36/4,871.74 = 939.40/x
  3. Step 3: Cross multiply
    3,248.36x = 4,871.74 × 939.40
  4. Step 4: Simplify right side
    3,248.36x = 4,576,512.56
  5. Step 5: Solve for x
    x = 4,576,512.56/3,248.36
  6. Step 6: Final answer
    x = 1,408.87

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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.