Home / 5,423.60-8,135.80-1,960.40

Finding the Fourth Proportional to 5,423.60, 8,135.80 and 1,960.40

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Solution

The fourth proportional to 5,423.60, 8,135.80 and 1,960.40 is: 2,940.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.60 : 8,135.80 = 1,960.40 : x
  2. Step 2: Convert to fraction form
    5,423.60/8,135.80 = 1,960.40/x
  3. Step 3: Cross multiply
    5,423.60x = 8,135.80 × 1,960.40
  4. Step 4: Simplify right side
    5,423.60x = 15,949,422.32
  5. Step 5: Solve for x
    x = 15,949,422.32/5,423.60
  6. Step 6: Final answer
    x = 2,940.74

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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.