Home / 7,720.98-11,581.38-1,877.64

Finding the Fourth Proportional to 7,720.98, 11,581.38 and 1,877.64

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Solution

The fourth proportional to 7,720.98, 11,581.38 and 1,877.64 is: 2,816.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.98 : 11,581.38 = 1,877.64 : x
  2. Step 2: Convert to fraction form
    7,720.98/11,581.38 = 1,877.64/x
  3. Step 3: Cross multiply
    7,720.98x = 11,581.38 × 1,877.64
  4. Step 4: Simplify right side
    7,720.98x = 21,745,662.34
  5. Step 5: Solve for x
    x = 21,745,662.34/7,720.98
  6. Step 6: Final answer
    x = 2,816.44

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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.