Home / 9,318.48-12,858.90-5,338.68

Finding the Fourth Proportional to 9,318.48, 12,858.90 and 5,338.68

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Solution

The fourth proportional to 9,318.48, 12,858.90 and 5,338.68 is: 7,367.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.48 : 12,858.90 = 5,338.68 : x
  2. Step 2: Convert to fraction form
    9,318.48/12,858.90 = 5,338.68/x
  3. Step 3: Cross multiply
    9,318.48x = 12,858.90 × 5,338.68
  4. Step 4: Simplify right side
    9,318.48x = 68,649,552.25
  5. Step 5: Solve for x
    x = 68,649,552.25/9,318.48
  6. Step 6: Final answer
    x = 7,367.03

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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.