Home / 3,247.60-4,871.04-939.10

Finding the Fourth Proportional to 3,247.60, 4,871.04 and 939.10

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Solution

The fourth proportional to 3,247.60, 4,871.04 and 939.10 is: 1,408.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,247.60 : 4,871.04 = 939.10 : x
  2. Step 2: Convert to fraction form
    3,247.60/4,871.04 = 939.10/x
  3. Step 3: Cross multiply
    3,247.60x = 4,871.04 × 939.10
  4. Step 4: Simplify right side
    3,247.60x = 4,574,393.66
  5. Step 5: Solve for x
    x = 4,574,393.66/3,247.60
  6. Step 6: Final answer
    x = 1,408.55

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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.