Home / 9,318.42-12,858.75-5,338.89

Finding the Fourth Proportional to 9,318.42, 12,858.75 and 5,338.89

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Solution

The fourth proportional to 9,318.42, 12,858.75 and 5,338.89 is: 7,367.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.42 : 12,858.75 = 5,338.89 : x
  2. Step 2: Convert to fraction form
    9,318.42/12,858.75 = 5,338.89/x
  3. Step 3: Cross multiply
    9,318.42x = 12,858.75 × 5,338.89
  4. Step 4: Simplify right side
    9,318.42x = 68,651,451.79
  5. Step 5: Solve for x
    x = 68,651,451.79/9,318.42
  6. Step 6: Final answer
    x = 7,367.28

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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.