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Finding the Fourth Proportional to 9,107.16, 13,659.54 and 2,867.20

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Solution

The fourth proportional to 9,107.16, 13,659.54 and 2,867.20 is: 4,300.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,107.16 : 13,659.54 = 2,867.20 : x
  2. Step 2: Convert to fraction form
    9,107.16/13,659.54 = 2,867.20/x
  3. Step 3: Cross multiply
    9,107.16x = 13,659.54 × 2,867.20
  4. Step 4: Simplify right side
    9,107.16x = 39,164,623.23
  5. Step 5: Solve for x
    x = 39,164,623.23/9,107.16
  6. Step 6: Final answer
    x = 4,300.42

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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.