Home / 4,219.20-6,328.80-3,902.40

Finding the Fourth Proportional to 4,219.20, 6,328.80 and 3,902.40

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Solution

The fourth proportional to 4,219.20, 6,328.80 and 3,902.40 is: 5,853.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,219.20 : 6,328.80 = 3,902.40 : x
  2. Step 2: Convert to fraction form
    4,219.20/6,328.80 = 3,902.40/x
  3. Step 3: Cross multiply
    4,219.20x = 6,328.80 × 3,902.40
  4. Step 4: Simplify right side
    4,219.20x = 24,697,509.12
  5. Step 5: Solve for x
    x = 24,697,509.12/4,219.20
  6. Step 6: Final answer
    x = 5,853.60

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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.