Home / 7,875.75-11,815.26-3,258.75

Finding the Fourth Proportional to 7,875.75, 11,815.26 and 3,258.75

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Solution

The fourth proportional to 7,875.75, 11,815.26 and 3,258.75 is: 4,888.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.75 : 11,815.26 = 3,258.75 : x
  2. Step 2: Convert to fraction form
    7,875.75/11,815.26 = 3,258.75/x
  3. Step 3: Cross multiply
    7,875.75x = 11,815.26 × 3,258.75
  4. Step 4: Simplify right side
    7,875.75x = 38,502,978.53
  5. Step 5: Solve for x
    x = 38,502,978.53/7,875.75
  6. Step 6: Final answer
    x = 4,888.80

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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.