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Finding the Fourth Proportional to 9,013.80, 13,510.80 and 3,167.40

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Solution

The fourth proportional to 9,013.80, 13,510.80 and 3,167.40 is: 4,747.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,013.80 : 13,510.80 = 3,167.40 : x
  2. Step 2: Convert to fraction form
    9,013.80/13,510.80 = 3,167.40/x
  3. Step 3: Cross multiply
    9,013.80x = 13,510.80 × 3,167.40
  4. Step 4: Simplify right side
    9,013.80x = 42,794,107.92
  5. Step 5: Solve for x
    x = 42,794,107.92/9,013.80
  6. Step 6: Final answer
    x = 4,747.62

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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.