Home / 7,638.30-11,457.72-2,443.50

Finding the Fourth Proportional to 7,638.30, 11,457.72 and 2,443.50

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Solution

The fourth proportional to 7,638.30, 11,457.72 and 2,443.50 is: 3,665.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,638.30 : 11,457.72 = 2,443.50 : x
  2. Step 2: Convert to fraction form
    7,638.30/11,457.72 = 2,443.50/x
  3. Step 3: Cross multiply
    7,638.30x = 11,457.72 × 2,443.50
  4. Step 4: Simplify right side
    7,638.30x = 27,996,938.82
  5. Step 5: Solve for x
    x = 27,996,938.82/7,638.30
  6. Step 6: Final answer
    x = 3,665.34

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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.