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Finding the Fourth Proportional to 3,145.88, 4,716.98 and 953.96

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Solution

The fourth proportional to 3,145.88, 4,716.98 and 953.96 is: 1,430.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.88 : 4,716.98 = 953.96 : x
  2. Step 2: Convert to fraction form
    3,145.88/4,716.98 = 953.96/x
  3. Step 3: Cross multiply
    3,145.88x = 4,716.98 × 953.96
  4. Step 4: Simplify right side
    3,145.88x = 4,499,810.24
  5. Step 5: Solve for x
    x = 4,499,810.24/3,145.88
  6. Step 6: Final answer
    x = 1,430.38

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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.