Home / 7,851.18-11,776.88-1,928.08

Finding the Fourth Proportional to 7,851.18, 11,776.88 and 1,928.08

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Solution

The fourth proportional to 7,851.18, 11,776.88 and 1,928.08 is: 2,892.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.18 : 11,776.88 = 1,928.08 : x
  2. Step 2: Convert to fraction form
    7,851.18/11,776.88 = 1,928.08/x
  3. Step 3: Cross multiply
    7,851.18x = 11,776.88 × 1,928.08
  4. Step 4: Simplify right side
    7,851.18x = 22,706,766.79
  5. Step 5: Solve for x
    x = 22,706,766.79/7,851.18
  6. Step 6: Final answer
    x = 2,892.15

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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.