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Finding the Fourth Proportional to 11,235.40, 16,853.10 and 3,840.10

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Solution

The fourth proportional to 11,235.40, 16,853.10 and 3,840.10 is: 5,760.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,235.40 : 16,853.10 = 3,840.10 : x
  2. Step 2: Convert to fraction form
    11,235.40/16,853.10 = 3,840.10/x
  3. Step 3: Cross multiply
    11,235.40x = 16,853.10 × 3,840.10
  4. Step 4: Simplify right side
    11,235.40x = 64,717,589.31
  5. Step 5: Solve for x
    x = 64,717,589.31/11,235.40
  6. Step 6: Final answer
    x = 5,760.15

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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.