Home / 9,318.40-12,859.11-5,126.64

Finding the Fourth Proportional to 9,318.40, 12,859.11 and 5,126.64

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Solution

The fourth proportional to 9,318.40, 12,859.11 and 5,126.64 is: 7,074.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.40 : 12,859.11 = 5,126.64 : x
  2. Step 2: Convert to fraction form
    9,318.40/12,859.11 = 5,126.64/x
  3. Step 3: Cross multiply
    9,318.40x = 12,859.11 × 5,126.64
  4. Step 4: Simplify right side
    9,318.40x = 65,924,027.69
  5. Step 5: Solve for x
    x = 65,924,027.69/9,318.40
  6. Step 6: Final answer
    x = 7,074.61

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1.5x scale

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.