Home / 9,218.78-13,890.35-7,611.33

Finding the Fourth Proportional to 9,218.78, 13,890.35 and 7,611.33

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Solution

The fourth proportional to 9,218.78, 13,890.35 and 7,611.33 is: 11,468.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,218.78 : 13,890.35 = 7,611.33 : x
  2. Step 2: Convert to fraction form
    9,218.78/13,890.35 = 7,611.33/x
  3. Step 3: Cross multiply
    9,218.78x = 13,890.35 × 7,611.33
  4. Step 4: Simplify right side
    9,218.78x = 105,723,999.61
  5. Step 5: Solve for x
    x = 105,723,999.61/9,218.78
  6. Step 6: Final answer
    x = 11,468.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.