Home / 5,277.78-7,909.80-2,154.15

Finding the Fourth Proportional to 5,277.78, 7,909.80 and 2,154.15

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Solution

The fourth proportional to 5,277.78, 7,909.80 and 2,154.15 is: 3,228.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,277.78 : 7,909.80 = 2,154.15 : x
  2. Step 2: Convert to fraction form
    5,277.78/7,909.80 = 2,154.15/x
  3. Step 3: Cross multiply
    5,277.78x = 7,909.80 × 2,154.15
  4. Step 4: Simplify right side
    5,277.78x = 17,038,895.67
  5. Step 5: Solve for x
    x = 17,038,895.67/5,277.78
  6. Step 6: Final answer
    x = 3,228.42

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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.