Home / 5,207.94-7,811.82-1,312.29

Finding the Fourth Proportional to 5,207.94, 7,811.82 and 1,312.29

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Solution

The fourth proportional to 5,207.94, 7,811.82 and 1,312.29 is: 1,968.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,207.94 : 7,811.82 = 1,312.29 : x
  2. Step 2: Convert to fraction form
    5,207.94/7,811.82 = 1,312.29/x
  3. Step 3: Cross multiply
    5,207.94x = 7,811.82 × 1,312.29
  4. Step 4: Simplify right side
    5,207.94x = 10,251,373.27
  5. Step 5: Solve for x
    x = 10,251,373.27/5,207.94
  6. Step 6: Final answer
    x = 1,968.41

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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.