Home / 9,318.70-12,860.54-5,340.79

Finding the Fourth Proportional to 9,318.70, 12,860.54 and 5,340.79

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Solution

The fourth proportional to 9,318.70, 12,860.54 and 5,340.79 is: 7,370.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.70 : 12,860.54 = 5,340.79 : x
  2. Step 2: Convert to fraction form
    9,318.70/12,860.54 = 5,340.79/x
  3. Step 3: Cross multiply
    9,318.70x = 12,860.54 × 5,340.79
  4. Step 4: Simplify right side
    9,318.70x = 68,685,443.43
  5. Step 5: Solve for x
    x = 68,685,443.43/9,318.70
  6. Step 6: Final answer
    x = 7,370.71

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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.