Home / 5,318.89-7,336.75-3,828.78

Finding the Fourth Proportional to 5,318.89, 7,336.75 and 3,828.78

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Solution

The fourth proportional to 5,318.89, 7,336.75 and 3,828.78 is: 5,281.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.89 : 7,336.75 = 3,828.78 : x
  2. Step 2: Convert to fraction form
    5,318.89/7,336.75 = 3,828.78/x
  3. Step 3: Cross multiply
    5,318.89x = 7,336.75 × 3,828.78
  4. Step 4: Simplify right side
    5,318.89x = 28,090,801.67
  5. Step 5: Solve for x
    x = 28,090,801.67/5,318.89
  6. Step 6: Final answer
    x = 5,281.33

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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.