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Finding the Fourth Proportional to 9,133.10, 12,815.50 and 9,133.10

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Solution

The fourth proportional to 9,133.10, 12,815.50 and 9,133.10 is: 12,815.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,133.10 : 12,815.50 = 9,133.10 : x
  2. Step 2: Convert to fraction form
    9,133.10/12,815.50 = 9,133.10/x
  3. Step 3: Cross multiply
    9,133.10x = 12,815.50 × 9,133.10
  4. Step 4: Simplify right side
    9,133.10x = 117,045,243.05
  5. Step 5: Solve for x
    x = 117,045,243.05/9,133.10
  6. Step 6: Final answer
    x = 12,815.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.