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Finding the Fourth Proportional to 9,143.64, 13,716 and 2,570.34

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Solution

The fourth proportional to 9,143.64, 13,716 and 2,570.34 is: 3,855.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,143.64 : 13,716 = 2,570.34 : x
  2. Step 2: Convert to fraction form
    9,143.64/13,716 = 2,570.34/x
  3. Step 3: Cross multiply
    9,143.64x = 13,716 × 2,570.34
  4. Step 4: Simplify right side
    9,143.64x = 35,254,783.44
  5. Step 5: Solve for x
    x = 35,254,783.44/9,143.64
  6. Step 6: Final answer
    x = 3,855.66

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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.