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Finding the Fourth Proportional to 9,005.75, 13,510.79 and 2,849.75

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Solution

The fourth proportional to 9,005.75, 13,510.79 and 2,849.75 is: 4,275.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,005.75 : 13,510.79 = 2,849.75 : x
  2. Step 2: Convert to fraction form
    9,005.75/13,510.79 = 2,849.75/x
  3. Step 3: Cross multiply
    9,005.75x = 13,510.79 × 2,849.75
  4. Step 4: Simplify right side
    9,005.75x = 38,502,373.80
  5. Step 5: Solve for x
    x = 38,502,373.80/9,005.75
  6. Step 6: Final answer
    x = 4,275.31

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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.