Home / 9,218.40-12,720.93-5,443.80

Finding the Fourth Proportional to 9,218.40, 12,720.93 and 5,443.80

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Solution

The fourth proportional to 9,218.40, 12,720.93 and 5,443.80 is: 7,512.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,218.40 : 12,720.93 = 5,443.80 : x
  2. Step 2: Convert to fraction form
    9,218.40/12,720.93 = 5,443.80/x
  3. Step 3: Cross multiply
    9,218.40x = 12,720.93 × 5,443.80
  4. Step 4: Simplify right side
    9,218.40x = 69,250,198.73
  5. Step 5: Solve for x
    x = 69,250,198.73/9,218.40
  6. Step 6: Final answer
    x = 7,512.17

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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.