Home / 5,208.40-7,813.28-1,923.80

Finding the Fourth Proportional to 5,208.40, 7,813.28 and 1,923.80

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Solution

The fourth proportional to 5,208.40, 7,813.28 and 1,923.80 is: 2,885.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.40 : 7,813.28 = 1,923.80 : x
  2. Step 2: Convert to fraction form
    5,208.40/7,813.28 = 1,923.80/x
  3. Step 3: Cross multiply
    5,208.40x = 7,813.28 × 1,923.80
  4. Step 4: Simplify right side
    5,208.40x = 15,031,212.41
  5. Step 5: Solve for x
    x = 15,031,212.41/5,208.40
  6. Step 6: Final answer
    x = 2,885.96

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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.