Home / 5,316.21-7,972.29-1,805.31

Finding the Fourth Proportional to 5,316.21, 7,972.29 and 1,805.31

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Solution

The fourth proportional to 5,316.21, 7,972.29 and 1,805.31 is: 2,707.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.21 : 7,972.29 = 1,805.31 : x
  2. Step 2: Convert to fraction form
    5,316.21/7,972.29 = 1,805.31/x
  3. Step 3: Cross multiply
    5,316.21x = 7,972.29 × 1,805.31
  4. Step 4: Simplify right side
    5,316.21x = 14,392,454.86
  5. Step 5: Solve for x
    x = 14,392,454.86/5,316.21
  6. Step 6: Final answer
    x = 2,707.28

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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.