Home / 9,318.72-12,860-5,126.96

Finding the Fourth Proportional to 9,318.72, 12,860 and 5,126.96

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Solution

The fourth proportional to 9,318.72, 12,860 and 5,126.96 is: 7,075.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.72 : 12,860 = 5,126.96 : x
  2. Step 2: Convert to fraction form
    9,318.72/12,860 = 5,126.96/x
  3. Step 3: Cross multiply
    9,318.72x = 12,860 × 5,126.96
  4. Step 4: Simplify right side
    9,318.72x = 65,932,705.60
  5. Step 5: Solve for x
    x = 65,932,705.60/9,318.72
  6. Step 6: Final answer
    x = 7,075.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.