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Finding the Fourth Proportional to 12,540.38, 18,810.38 and 3,052.76

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Solution

The fourth proportional to 12,540.38, 18,810.38 and 3,052.76 is: 4,579.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,540.38 : 18,810.38 = 3,052.76 : x
  2. Step 2: Convert to fraction form
    12,540.38/18,810.38 = 3,052.76/x
  3. Step 3: Cross multiply
    12,540.38x = 18,810.38 × 3,052.76
  4. Step 4: Simplify right side
    12,540.38x = 57,423,648.40
  5. Step 5: Solve for x
    x = 57,423,648.40/12,540.38
  6. Step 6: Final answer
    x = 4,579.10

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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.