Home / 8,960.26-13,440.69-4,280.80

Finding the Fourth Proportional to 8,960.26, 13,440.69 and 4,280.80

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Solution

The fourth proportional to 8,960.26, 13,440.69 and 4,280.80 is: 6,421.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,960.26 : 13,440.69 = 4,280.80 : x
  2. Step 2: Convert to fraction form
    8,960.26/13,440.69 = 4,280.80/x
  3. Step 3: Cross multiply
    8,960.26x = 13,440.69 × 4,280.80
  4. Step 4: Simplify right side
    8,960.26x = 57,536,905.75
  5. Step 5: Solve for x
    x = 57,536,905.75/8,960.26
  6. Step 6: Final answer
    x = 6,421.34

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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.