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Finding the Fourth Proportional to 7,807.48, 11,704.42 and 3,645.40

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Solution

The fourth proportional to 7,807.48, 11,704.42 and 3,645.40 is: 5,464.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,807.48 : 11,704.42 = 3,645.40 : x
  2. Step 2: Convert to fraction form
    7,807.48/11,704.42 = 3,645.40/x
  3. Step 3: Cross multiply
    7,807.48x = 11,704.42 × 3,645.40
  4. Step 4: Simplify right side
    7,807.48x = 42,667,292.67
  5. Step 5: Solve for x
    x = 42,667,292.67/7,807.48
  6. Step 6: Final answer
    x = 5,464.93

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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.