Home / 7,486-11,228.95-1,939.33

Finding the Fourth Proportional to 7,486, 11,228.95 and 1,939.33

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Solution

The fourth proportional to 7,486, 11,228.95 and 1,939.33 is: 2,908.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486 : 11,228.95 = 1,939.33 : x
  2. Step 2: Convert to fraction form
    7,486/11,228.95 = 1,939.33/x
  3. Step 3: Cross multiply
    7,486x = 11,228.95 × 1,939.33
  4. Step 4: Simplify right side
    7,486x = 21,776,639.60
  5. Step 5: Solve for x
    x = 21,776,639.60/7,486
  6. Step 6: Final answer
    x = 2,908.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.