Home / 9,318.18-12,857.49-5,339.46

Finding the Fourth Proportional to 9,318.18, 12,857.49 and 5,339.46

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Solution

The fourth proportional to 9,318.18, 12,857.49 and 5,339.46 is: 7,367.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.18 : 12,857.49 = 5,339.46 : x
  2. Step 2: Convert to fraction form
    9,318.18/12,857.49 = 5,339.46/x
  3. Step 3: Cross multiply
    9,318.18x = 12,857.49 × 5,339.46
  4. Step 4: Simplify right side
    9,318.18x = 68,652,053.56
  5. Step 5: Solve for x
    x = 68,652,053.56/9,318.18
  6. Step 6: Final answer
    x = 7,367.54

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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.