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Finding the Fourth Proportional to 4,808.53, 7,214 and 1,345.75

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Solution

The fourth proportional to 4,808.53, 7,214 and 1,345.75 is: 2,018.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,808.53 : 7,214 = 1,345.75 : x
  2. Step 2: Convert to fraction form
    4,808.53/7,214 = 1,345.75/x
  3. Step 3: Cross multiply
    4,808.53x = 7,214 × 1,345.75
  4. Step 4: Simplify right side
    4,808.53x = 9,708,240.50
  5. Step 5: Solve for x
    x = 9,708,240.50/4,808.53
  6. Step 6: Final answer
    x = 2,018.96

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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.