Home / 9,120.03-13,680.76-2,880.52

Finding the Fourth Proportional to 9,120.03, 13,680.76 and 2,880.52

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Solution

The fourth proportional to 9,120.03, 13,680.76 and 2,880.52 is: 4,321.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.03 : 13,680.76 = 2,880.52 : x
  2. Step 2: Convert to fraction form
    9,120.03/13,680.76 = 2,880.52/x
  3. Step 3: Cross multiply
    9,120.03x = 13,680.76 × 2,880.52
  4. Step 4: Simplify right side
    9,120.03x = 39,407,709.32
  5. Step 5: Solve for x
    x = 39,407,709.32/9,120.03
  6. Step 6: Final answer
    x = 4,321.01

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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.