Home / 9,720.35-14,580.75-3,480.80

Finding the Fourth Proportional to 9,720.35, 14,580.75 and 3,480.80

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Solution

The fourth proportional to 9,720.35, 14,580.75 and 3,480.80 is: 5,221.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,720.35 : 14,580.75 = 3,480.80 : x
  2. Step 2: Convert to fraction form
    9,720.35/14,580.75 = 3,480.80/x
  3. Step 3: Cross multiply
    9,720.35x = 14,580.75 × 3,480.80
  4. Step 4: Simplify right side
    9,720.35x = 50,752,601.70
  5. Step 5: Solve for x
    x = 50,752,601.70/9,720.35
  6. Step 6: Final answer
    x = 5,221.28

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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.