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Finding the Fourth Proportional to 4,887, 7,325.51 and 2,115.45

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Solution

The fourth proportional to 4,887, 7,325.51 and 2,115.45 is: 3,171.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,887 : 7,325.51 = 2,115.45 : x
  2. Step 2: Convert to fraction form
    4,887/7,325.51 = 2,115.45/x
  3. Step 3: Cross multiply
    4,887x = 7,325.51 × 2,115.45
  4. Step 4: Simplify right side
    4,887x = 15,496,739.55
  5. Step 5: Solve for x
    x = 15,496,739.55/4,887
  6. Step 6: Final answer
    x = 3,171.01

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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.