Home / 9,578.60-13,218.34-5,386.85

Finding the Fourth Proportional to 9,578.60, 13,218.34 and 5,386.85

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Solution

The fourth proportional to 9,578.60, 13,218.34 and 5,386.85 is: 7,433.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,578.60 : 13,218.34 = 5,386.85 : x
  2. Step 2: Convert to fraction form
    9,578.60/13,218.34 = 5,386.85/x
  3. Step 3: Cross multiply
    9,578.60x = 13,218.34 × 5,386.85
  4. Step 4: Simplify right side
    9,578.60x = 71,205,194.94
  5. Step 5: Solve for x
    x = 71,205,194.94/9,578.60
  6. Step 6: Final answer
    x = 7,433.78

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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.