Home / 4,251.20-6,376.80-1,330.40

Finding the Fourth Proportional to 4,251.20, 6,376.80 and 1,330.40

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Solution

The fourth proportional to 4,251.20, 6,376.80 and 1,330.40 is: 1,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,251.20 : 6,376.80 = 1,330.40 : x
  2. Step 2: Convert to fraction form
    4,251.20/6,376.80 = 1,330.40/x
  3. Step 3: Cross multiply
    4,251.20x = 6,376.80 × 1,330.40
  4. Step 4: Simplify right side
    4,251.20x = 8,483,694.72
  5. Step 5: Solve for x
    x = 8,483,694.72/4,251.20
  6. Step 6: Final answer
    x = 1,995.60

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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.