Home / 3,401.60-5,102.40-936.80

Finding the Fourth Proportional to 3,401.60, 5,102.40 and 936.80

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Solution

The fourth proportional to 3,401.60, 5,102.40 and 936.80 is: 1,405.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,401.60 : 5,102.40 = 936.80 : x
  2. Step 2: Convert to fraction form
    3,401.60/5,102.40 = 936.80/x
  3. Step 3: Cross multiply
    3,401.60x = 5,102.40 × 936.80
  4. Step 4: Simplify right side
    3,401.60x = 4,779,928.32
  5. Step 5: Solve for x
    x = 4,779,928.32/3,401.60
  6. Step 6: Final answer
    x = 1,405.20

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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.